Finding the Fourth Proportional to 72,210.78, 108,281.98 and 42,233.69

Step by Step Solution

1. Step 1: Write the proportion equation
   72,210.78 : 108,281.98 = 42,233.69 : x
2. Step 2: Convert to fraction form
   72,210.78/108,281.98 = 42,233.69/x
3. Step 3: Cross multiply
   72,210.78x = 108,281.98 × 42,233.69
4. Step 4: Simplify right side
   72,210.78x = 4,573,147,575.91
5. Step 5: Solve for x
   x = 4,573,147,575.91/72,210.78
6. Step 6: Final answer
   x = 63,330.54