Finding the Fourth Proportional to 116,059.74, 160,211.43 and 78,385.02

Step by Step Solution

1. Step 1: Write the proportion equation
   116,059.74 : 160,211.43 = 78,385.02 : x
2. Step 2: Convert to fraction form
   116,059.74/160,211.43 = 78,385.02/x
3. Step 3: Cross multiply
   116,059.74x = 160,211.43 × 78,385.02
4. Step 4: Simplify right side
   116,059.74x = 12,558,176,144.78
5. Step 5: Solve for x
   x = 12,558,176,144.78/116,059.74
6. Step 6: Final answer
   x = 108,204.41