Finding the Fourth Proportional to 59,302.56, 81,887.40 and 42,358.78

Step by Step Solution

1. Step 1: Write the proportion equation
   59,302.56 : 81,887.40 = 42,358.78 : x
2. Step 2: Convert to fraction form
   59,302.56/81,887.40 = 42,358.78/x
3. Step 3: Cross multiply
   59,302.56x = 81,887.40 × 42,358.78
4. Step 4: Simplify right side
   59,302.56x = 3,468,650,361.37
5. Step 5: Solve for x
   x = 3,468,650,361.37/59,302.56
6. Step 6: Final answer
   x = 58,490.74