Finding the Fourth Proportional to 111,787.60, 154,188.72 and 75,915.28

Step by Step Solution

1. Step 1: Write the proportion equation
   111,787.60 : 154,188.72 = 75,915.28 : x
2. Step 2: Convert to fraction form
   111,787.60/154,188.72 = 75,915.28/x
3. Step 3: Cross multiply
   111,787.60x = 154,188.72 × 75,915.28
4. Step 4: Simplify right side
   111,787.60x = 11,705,279,851.64
5. Step 5: Solve for x
   x = 11,705,279,851.64/111,787.60
6. Step 6: Final answer
   x = 104,710.00