Finding the Fourth Proportional to 48,522.72, 66,978.72 and 29,661.60

Step by Step Solution

1. Step 1: Write the proportion equation
   48,522.72 : 66,978.72 = 29,661.60 : x
2. Step 2: Convert to fraction form
   48,522.72/66,978.72 = 29,661.60/x
3. Step 3: Cross multiply
   48,522.72x = 66,978.72 × 29,661.60
4. Step 4: Simplify right side
   48,522.72x = 1,986,696,001.15
5. Step 5: Solve for x
   x = 1,986,696,001.15/48,522.72
6. Step 6: Final answer
   x = 40,943.62