Finding the Fourth Proportional to 89,355.88, 123,320.96 and 51,118.98

Step by Step Solution

1. Step 1: Write the proportion equation
   89,355.88 : 123,320.96 = 51,118.98 : x
2. Step 2: Convert to fraction form
   89,355.88/123,320.96 = 51,118.98/x
3. Step 3: Cross multiply
   89,355.88x = 123,320.96 × 51,118.98
4. Step 4: Simplify right side
   89,355.88x = 6,304,041,687.82
5. Step 5: Solve for x
   x = 6,304,041,687.82/89,355.88
6. Step 6: Final answer
   x = 70,549.82