Finding the Fourth Proportional to 173,549.96, 260,412.57 and 78,719.71

Step by Step Solution

1. Step 1: Write the proportion equation
   173,549.96 : 260,412.57 = 78,719.71 : x
2. Step 2: Convert to fraction form
   173,549.96/260,412.57 = 78,719.71/x
3. Step 3: Cross multiply
   173,549.96x = 260,412.57 × 78,719.71
4. Step 4: Simplify right side
   173,549.96x = 20,499,601,339.72
5. Step 5: Solve for x
   x = 20,499,601,339.72/173,549.96
6. Step 6: Final answer
   x = 118,119.31