Finding the Fourth Proportional to 62,112.74, 85,727.72 and 39,478.10

Step by Step Solution

1. Step 1: Write the proportion equation
   62,112.74 : 85,727.72 = 39,478.10 : x
2. Step 2: Convert to fraction form
   62,112.74/85,727.72 = 39,478.10/x
3. Step 3: Cross multiply
   62,112.74x = 85,727.72 × 39,478.10
4. Step 4: Simplify right side
   62,112.74x = 3,384,367,502.93
5. Step 5: Solve for x
   x = 3,384,367,502.93/62,112.74
6. Step 6: Final answer
   x = 54,487.49