Finding the Fourth Proportional to 79,128.56, 118,522.20 and 74,475.92

Step by Step Solution

1. Step 1: Write the proportion equation
   79,128.56 : 118,522.20 = 74,475.92 : x
2. Step 2: Convert to fraction form
   79,128.56/118,522.20 = 74,475.92/x
3. Step 3: Cross multiply
   79,128.56x = 118,522.20 × 74,475.92
4. Step 4: Simplify right side
   79,128.56x = 8,827,049,885.42
5. Step 5: Solve for x
   x = 8,827,049,885.42/79,128.56
6. Step 6: Final answer
   x = 111,553.27