Finding the Fourth Proportional to 112,654.14, 155,375.91 and 78,651.42

Step by Step Solution

1. Step 1: Write the proportion equation
   112,654.14 : 155,375.91 = 78,651.42 : x
2. Step 2: Convert to fraction form
   112,654.14/155,375.91 = 78,651.42/x
3. Step 3: Cross multiply
   112,654.14x = 155,375.91 × 78,651.42
4. Step 4: Simplify right side
   112,654.14x = 12,220,535,955.29
5. Step 5: Solve for x
   x = 12,220,535,955.29/112,654.14
6. Step 6: Final answer
   x = 108,478.36