Finding the Fourth Proportional to 88,188.64, 132,144.72 and 74,986.72

Step by Step Solution

1. Step 1: Write the proportion equation
   88,188.64 : 132,144.72 = 74,986.72 : x
2. Step 2: Convert to fraction form
   88,188.64/132,144.72 = 74,986.72/x
3. Step 3: Cross multiply
   88,188.64x = 132,144.72 × 74,986.72
4. Step 4: Simplify right side
   88,188.64x = 9,909,099,118.12
5. Step 5: Solve for x
   x = 9,909,099,118.12/88,188.64
6. Step 6: Final answer
   x = 112,362.53