Finding the Fourth Proportional to 56,479.55, 78,022.89 and 45,134.19

Step by Step Solution

1. Step 1: Write the proportion equation
   56,479.55 : 78,022.89 = 45,134.19 : x
2. Step 2: Convert to fraction form
   56,479.55/78,022.89 = 45,134.19/x
3. Step 3: Cross multiply
   56,479.55x = 78,022.89 × 45,134.19
4. Step 4: Simplify right side
   56,479.55x = 3,521,499,941.61
5. Step 5: Solve for x
   x = 3,521,499,941.61/56,479.55
6. Step 6: Final answer
   x = 62,350.01