Finding the Fourth Proportional to 62,111.32, 85,770.51 and 39,457.60

Step by Step Solution

1. Step 1: Write the proportion equation
   62,111.32 : 85,770.51 = 39,457.60 : x
2. Step 2: Convert to fraction form
   62,111.32/85,770.51 = 39,457.60/x
3. Step 3: Cross multiply
   62,111.32x = 85,770.51 × 39,457.60
4. Step 4: Simplify right side
   62,111.32x = 3,384,298,475.38
5. Step 5: Solve for x
   x = 3,384,298,475.38/62,111.32
6. Step 6: Final answer
   x = 54,487.63