Finding the Fourth Proportional to 110,799.72, 152,719.50 and 78,492.88

Step by Step Solution

1. Step 1: Write the proportion equation
   110,799.72 : 152,719.50 = 78,492.88 : x
2. Step 2: Convert to fraction form
   110,799.72/152,719.50 = 78,492.88/x
3. Step 3: Cross multiply
   110,799.72x = 152,719.50 × 78,492.88
4. Step 4: Simplify right side
   110,799.72x = 11,987,393,387.16
5. Step 5: Solve for x
   x = 11,987,393,387.16/110,799.72
6. Step 6: Final answer
   x = 108,189.74