Finding the Fourth Proportional to 56,356.42, 84,414.72 and 45,776.74

Step by Step Solution

1. Step 1: Write the proportion equation
   56,356.42 : 84,414.72 = 45,776.74 : x
2. Step 2: Convert to fraction form
   56,356.42/84,414.72 = 45,776.74/x
3. Step 3: Cross multiply
   56,356.42x = 84,414.72 × 45,776.74
4. Step 4: Simplify right side
   56,356.42x = 3,864,230,689.61
5. Step 5: Solve for x
   x = 3,864,230,689.61/56,356.42
6. Step 6: Final answer
   x = 68,567.71