Finding the Fourth Proportional to 72,314.08, 99,723.32 and 56,392.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,314.08 : 99,723.32 = 56,392.72 : x
2. Step 2: Convert to fraction form
   72,314.08/99,723.32 = 56,392.72/x
3. Step 3: Cross multiply
   72,314.08x = 99,723.32 × 56,392.72
4. Step 4: Simplify right side
   72,314.08x = 5,623,669,262.23
5. Step 5: Solve for x
   x = 5,623,669,262.23/72,314.08
6. Step 6: Final answer
   x = 77,767.28