Finding the Fourth Proportional to 113,557.36, 170,175.42 and 62,978.78

Step by Step Solution

1. Step 1: Write the proportion equation
   113,557.36 : 170,175.42 = 62,978.78 : x
2. Step 2: Convert to fraction form
   113,557.36/170,175.42 = 62,978.78/x
3. Step 3: Cross multiply
   113,557.36x = 170,175.42 × 62,978.78
4. Step 4: Simplify right side
   113,557.36x = 10,717,440,337.59
5. Step 5: Solve for x
   x = 10,717,440,337.59/113,557.36
6. Step 6: Final answer
   x = 94,379.09