Finding the Fourth Proportional to 72,970.29, 109,307.61 and 56,272.41

Step by Step Solution

1. Step 1: Write the proportion equation
   72,970.29 : 109,307.61 = 56,272.41 : x
2. Step 2: Convert to fraction form
   72,970.29/109,307.61 = 56,272.41/x
3. Step 3: Cross multiply
   72,970.29x = 109,307.61 × 56,272.41
4. Step 4: Simplify right side
   72,970.29x = 6,151,002,646.04
5. Step 5: Solve for x
   x = 6,151,002,646.04/72,970.29
6. Step 6: Final answer
   x = 84,294.62