Finding the Fourth Proportional to 62,139.57, 85,723.29 and 42,003.48

Step by Step Solution

1. Step 1: Write the proportion equation
   62,139.57 : 85,723.29 = 42,003.48 : x
2. Step 2: Convert to fraction form
   62,139.57/85,723.29 = 42,003.48/x
3. Step 3: Cross multiply
   62,139.57x = 85,723.29 × 42,003.48
4. Step 4: Simplify right side
   62,139.57x = 3,600,676,497.05
5. Step 5: Solve for x
   x = 3,600,676,497.05/62,139.57
6. Step 6: Final answer
   x = 57,944.99