Finding the Fourth Proportional to 69,656.15, 96,124.12 and 40,978.91

Step by Step Solution

1. Step 1: Write the proportion equation
   69,656.15 : 96,124.12 = 40,978.91 : x
2. Step 2: Convert to fraction form
   69,656.15/96,124.12 = 40,978.91/x
3. Step 3: Cross multiply
   69,656.15x = 96,124.12 × 40,978.91
4. Step 4: Simplify right side
   69,656.15x = 3,939,061,800.17
5. Step 5: Solve for x
   x = 3,939,061,800.17/69,656.15
6. Step 6: Final answer
   x = 56,550.09