Finding the Fourth Proportional to 55,470.48, 83,234.52 and 42,406.80

Step by Step Solution

1. Step 1: Write the proportion equation
   55,470.48 : 83,234.52 = 42,406.80 : x
2. Step 2: Convert to fraction form
   55,470.48/83,234.52 = 42,406.80/x
3. Step 3: Cross multiply
   55,470.48x = 83,234.52 × 42,406.80
4. Step 4: Simplify right side
   55,470.48x = 3,529,709,642.74
5. Step 5: Solve for x
   x = 3,529,709,642.74/55,470.48
6. Step 6: Final answer
   x = 63,632.22