Finding the Fourth Proportional to 59,680.32, 89,328.84 and 39,643.60

Step by Step Solution

1. Step 1: Write the proportion equation
   59,680.32 : 89,328.84 = 39,643.60 : x
2. Step 2: Convert to fraction form
   59,680.32/89,328.84 = 39,643.60/x
3. Step 3: Cross multiply
   59,680.32x = 89,328.84 × 39,643.60
4. Step 4: Simplify right side
   59,680.32x = 3,541,316,801.42
5. Step 5: Solve for x
   x = 3,541,316,801.42/59,680.32
6. Step 6: Final answer
   x = 59,338.10