Finding the Fourth Proportional to 72,314.58, 99,724.02 and 56,393.22

Step by Step Solution

1. Step 1: Write the proportion equation
   72,314.58 : 99,724.02 = 56,393.22 : x
2. Step 2: Convert to fraction form
   72,314.58/99,724.02 = 56,393.22/x
3. Step 3: Cross multiply
   72,314.58x = 99,724.02 × 56,393.22
4. Step 4: Simplify right side
   72,314.58x = 5,623,758,599.14
5. Step 5: Solve for x
   x = 5,623,758,599.14/72,314.58
6. Step 6: Final answer
   x = 77,767.98