Finding the Fourth Proportional to 88,996.24, 122,779.88 and 57,160.72

Step by Step Solution

1. Step 1: Write the proportion equation
   88,996.24 : 122,779.88 = 57,160.72 : x
2. Step 2: Convert to fraction form
   88,996.24/122,779.88 = 57,160.72/x
3. Step 3: Cross multiply
   88,996.24x = 122,779.88 × 57,160.72
4. Step 4: Simplify right side
   88,996.24x = 7,018,186,342.31
5. Step 5: Solve for x
   x = 7,018,186,342.31/88,996.24
6. Step 6: Final answer
   x = 78,859.36