Finding the Fourth Proportional to 65,732, 90,710.16 and 42,220.96

Step by Step Solution

1. Step 1: Write the proportion equation
   65,732 : 90,710.16 = 42,220.96 : x
2. Step 2: Convert to fraction form
   65,732/90,710.16 = 42,220.96/x
3. Step 3: Cross multiply
   65,732x = 90,710.16 × 42,220.96
4. Step 4: Simplify right side
   65,732x = 3,829,870,036.95
5. Step 5: Solve for x
   x = 3,829,870,036.95/65,732
6. Step 6: Final answer
   x = 58,264.92