Finding the Fourth Proportional to 129,524.01, 178,695.72 and 78,499.94

Step by Step Solution

1. Step 1: Write the proportion equation
   129,524.01 : 178,695.72 = 78,499.94 : x
2. Step 2: Convert to fraction form
   129,524.01/178,695.72 = 78,499.94/x
3. Step 3: Cross multiply
   129,524.01x = 178,695.72 × 78,499.94
4. Step 4: Simplify right side
   129,524.01x = 14,027,602,404.78
5. Step 5: Solve for x
   x = 14,027,602,404.78/129,524.01
6. Step 6: Final answer
   x = 108,301.17