Finding the Fourth Proportional to 91,944, 126,882.72 and 56,128.32

Step by Step Solution

1. Step 1: Write the proportion equation
   91,944 : 126,882.72 = 56,128.32 : x
2. Step 2: Convert to fraction form
   91,944/126,882.72 = 56,128.32/x
3. Step 3: Cross multiply
   91,944x = 126,882.72 × 56,128.32
4. Step 4: Simplify right side
   91,944x = 7,121,713,910.63
5. Step 5: Solve for x
   x = 7,121,713,910.63/91,944
6. Step 6: Final answer
   x = 77,457.08