Finding the Fourth Proportional to 72,772.83, 109,071.77 and 39,491.55

Step by Step Solution

1. Step 1: Write the proportion equation
   72,772.83 : 109,071.77 = 39,491.55 : x
2. Step 2: Convert to fraction form
   72,772.83/109,071.77 = 39,491.55/x
3. Step 3: Cross multiply
   72,772.83x = 109,071.77 × 39,491.55
4. Step 4: Simplify right side
   72,772.83x = 4,307,413,061.09
5. Step 5: Solve for x
   x = 4,307,413,061.09/72,772.83
6. Step 6: Final answer
   x = 59,189.85