Finding the Fourth Proportional to 72,712.30, 109,126.77 and 37,661.98

Step by Step Solution

1. Step 1: Write the proportion equation
   72,712.30 : 109,126.77 = 37,661.98 : x
2. Step 2: Convert to fraction form
   72,712.30/109,126.77 = 37,661.98/x
3. Step 3: Cross multiply
   72,712.30x = 109,126.77 × 37,661.98
4. Step 4: Simplify right side
   72,712.30x = 4,109,929,683.57
5. Step 5: Solve for x
   x = 4,109,929,683.57/72,712.30
6. Step 6: Final answer
   x = 56,523.17