Finding the Fourth Proportional to 56,154.78, 77,423.54 and 35,978.48

Step by Step Solution

1. Step 1: Write the proportion equation
   56,154.78 : 77,423.54 = 35,978.48 : x
2. Step 2: Convert to fraction form
   56,154.78/77,423.54 = 35,978.48/x
3. Step 3: Cross multiply
   56,154.78x = 77,423.54 × 35,978.48
4. Step 4: Simplify right side
   56,154.78x = 2,785,581,285.42
5. Step 5: Solve for x
   x = 2,785,581,285.42/56,154.78
6. Step 6: Final answer
   x = 49,605.42