Finding the Fourth Proportional to 116,153.02, 160,340.10 and 78,478.30

Step by Step Solution

1. Step 1: Write the proportion equation
   116,153.02 : 160,340.10 = 78,478.30 : x
2. Step 2: Convert to fraction form
   116,153.02/160,340.10 = 78,478.30/x
3. Step 3: Cross multiply
   116,153.02x = 160,340.10 × 78,478.30
4. Step 4: Simplify right side
   116,153.02x = 12,583,218,469.83
5. Step 5: Solve for x
   x = 12,583,218,469.83/116,153.02
6. Step 6: Final answer
   x = 108,333.11