Finding the Fourth Proportional to 94,752.64, 142,128.72 and 88,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   94,752.64 : 142,128.72 = 88,978.72 : x
2. Step 2: Convert to fraction form
   94,752.64/142,128.72 = 88,978.72/x
3. Step 3: Cross multiply
   94,752.64x = 142,128.72 × 88,978.72
4. Step 4: Simplify right side
   94,752.64x = 12,646,431,580.84
5. Step 5: Solve for x
   x = 12,646,431,580.84/94,752.64
6. Step 6: Final answer
   x = 133,467.85