Finding the Fourth Proportional to 52,422.32, 72,345.83 and 39,478.42

Step by Step Solution

1. Step 1: Write the proportion equation
   52,422.32 : 72,345.83 = 39,478.42 : x
2. Step 2: Convert to fraction form
   52,422.32/72,345.83 = 39,478.42/x
3. Step 3: Cross multiply
   52,422.32x = 72,345.83 × 39,478.42
4. Step 4: Simplify right side
   52,422.32x = 2,856,098,502.87
5. Step 5: Solve for x
   x = 2,856,098,502.87/52,422.32
6. Step 6: Final answer
   x = 54,482.49