Finding the Fourth Proportional to 116,141.85, 174,095.10 and 78,705.68

Step by Step Solution

1. Step 1: Write the proportion equation
   116,141.85 : 174,095.10 = 78,705.68 : x
2. Step 2: Convert to fraction form
   116,141.85/174,095.10 = 78,705.68/x
3. Step 3: Cross multiply
   116,141.85x = 174,095.10 × 78,705.68
4. Step 4: Simplify right side
   116,141.85x = 13,702,272,359.69
5. Step 5: Solve for x
   x = 13,702,272,359.69/116,141.85
6. Step 6: Final answer
   x = 117,978.77