Finding the Fourth Proportional to 116,252.76, 160,477.56 and 78,578.04

Step by Step Solution

1. Step 1: Write the proportion equation
   116,252.76 : 160,477.56 = 78,578.04 : x
2. Step 2: Convert to fraction form
   116,252.76/160,477.56 = 78,578.04/x
3. Step 3: Cross multiply
   116,252.76x = 160,477.56 × 78,578.04
4. Step 4: Simplify right side
   116,252.76x = 12,610,012,128.78
5. Step 5: Solve for x
   x = 12,610,012,128.78/116,252.76
6. Step 6: Final answer
   x = 108,470.65