Finding the Fourth Proportional to 116,142.60, 160,279.92 and 68,387.16

Step by Step Solution

1. Step 1: Write the proportion equation
   116,142.60 : 160,279.92 = 68,387.16 : x
2. Step 2: Convert to fraction form
   116,142.60/160,279.92 = 68,387.16/x
3. Step 3: Cross multiply
   116,142.60x = 160,279.92 × 68,387.16
4. Step 4: Simplify right side
   116,142.60x = 10,961,088,533.83
5. Step 5: Solve for x
   x = 10,961,088,533.83/116,142.60
6. Step 6: Final answer
   x = 94,376.12