Finding the Fourth Proportional to 92,978.62, 128,309.94 and 52,700.02

Step by Step Solution

1. Step 1: Write the proportion equation
   92,978.62 : 128,309.94 = 52,700.02 : x
2. Step 2: Convert to fraction form
   92,978.62/128,309.94 = 52,700.02/x
3. Step 3: Cross multiply
   92,978.62x = 128,309.94 × 52,700.02
4. Step 4: Simplify right side
   92,978.62x = 6,761,936,083.42
5. Step 5: Solve for x
   x = 6,761,936,083.42/92,978.62
6. Step 6: Final answer
   x = 72,725.71