Finding the Fourth Proportional to 55,470.12, 83,155.50 and 20,385.24

Step by Step Solution

1. Step 1: Write the proportion equation
   55,470.12 : 83,155.50 = 20,385.24 : x
2. Step 2: Convert to fraction form
   55,470.12/83,155.50 = 20,385.24/x
3. Step 3: Cross multiply
   55,470.12x = 83,155.50 × 20,385.24
4. Step 4: Simplify right side
   55,470.12x = 1,695,144,824.82
5. Step 5: Solve for x
   x = 1,695,144,824.82/55,470.12
6. Step 6: Final answer
   x = 30,559.60