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Finding the Fourth Proportional to 208,457.12, 312,682.38 and 66,300.34

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Solution

The fourth proportional to 208,457.12, 312,682.38 and 66,300.34 is: 99,449.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,457.12 : 312,682.38 = 66,300.34 : x
  2. Step 2: Convert to fraction form
    208,457.12/312,682.38 = 66,300.34/x
  3. Step 3: Cross multiply
    208,457.12x = 312,682.38 × 66,300.34
  4. Step 4: Simplify right side
    208,457.12x = 20,730,948,106.01
  5. Step 5: Solve for x
    x = 20,730,948,106.01/208,457.12
  6. Step 6: Final answer
    x = 99,449.46

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