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Finding the Fourth Proportional to 156,878.22, 216,493.62 and 85,258.24

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Solution

The fourth proportional to 156,878.22, 216,493.62 and 85,258.24 is: 117,657.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,878.22 : 216,493.62 = 85,258.24 : x
  2. Step 2: Convert to fraction form
    156,878.22/216,493.62 = 85,258.24/x
  3. Step 3: Cross multiply
    156,878.22x = 216,493.62 × 85,258.24
  4. Step 4: Simplify right side
    156,878.22x = 18,457,864,151.48
  5. Step 5: Solve for x
    x = 18,457,864,151.48/156,878.22
  6. Step 6: Final answer
    x = 117,657.27

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