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Finding the Fourth Proportional to 228,435.76, 342,676.59 and 78,656.23

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Solution

The fourth proportional to 228,435.76, 342,676.59 and 78,656.23 is: 117,992.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,435.76 : 342,676.59 = 78,656.23 : x
  2. Step 2: Convert to fraction form
    228,435.76/342,676.59 = 78,656.23/x
  3. Step 3: Cross multiply
    228,435.76x = 342,676.59 × 78,656.23
  4. Step 4: Simplify right side
    228,435.76x = 26,953,649,401.96
  5. Step 5: Solve for x
    x = 26,953,649,401.96/228,435.76
  6. Step 6: Final answer
    x = 117,992.25

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