Finding the Fourth Proportional to 76,592.42, 105,749.61 and 56,451.62

Step by Step Solution

1. Step 1: Write the proportion equation
   76,592.42 : 105,749.61 = 56,451.62 : x
2. Step 2: Convert to fraction form
   76,592.42/105,749.61 = 56,451.62/x
3. Step 3: Cross multiply
   76,592.42x = 105,749.61 × 56,451.62
4. Step 4: Simplify right side
   76,592.42x = 5,969,736,798.87
5. Step 5: Solve for x
   x = 5,969,736,798.87/76,592.42
6. Step 6: Final answer
   x = 77,941.61