Finding the Fourth Proportional to 116,316.32, 160,577.60 and 78,275.88

Step by Step Solution

1. Step 1: Write the proportion equation
   116,316.32 : 160,577.60 = 78,275.88 : x
2. Step 2: Convert to fraction form
   116,316.32/160,577.60 = 78,275.88/x
3. Step 3: Cross multiply
   116,316.32x = 160,577.60 × 78,275.88
4. Step 4: Simplify right side
   116,316.32x = 12,569,352,556.91
5. Step 5: Solve for x
   x = 12,569,352,556.91/116,316.32
6. Step 6: Final answer
   x = 108,061.82