Finding the Fourth Proportional to 69,978.89, 96,511.43 and 59,130.17

Step by Step Solution

1. Step 1: Write the proportion equation
   69,978.89 : 96,511.43 = 59,130.17 : x
2. Step 2: Convert to fraction form
   69,978.89/96,511.43 = 59,130.17/x
3. Step 3: Cross multiply
   69,978.89x = 96,511.43 × 59,130.17
4. Step 4: Simplify right side
   69,978.89x = 5,706,737,651.95
5. Step 5: Solve for x
   x = 5,706,737,651.95/69,978.89
6. Step 6: Final answer
   x = 81,549.42