Finding the Fourth Proportional to 99,439, 137,227.98 and 54,727

Step by Step Solution

1. Step 1: Write the proportion equation
   99,439 : 137,227.98 = 54,727 : x
2. Step 2: Convert to fraction form
   99,439/137,227.98 = 54,727/x
3. Step 3: Cross multiply
   99,439x = 137,227.98 × 54,727
4. Step 4: Simplify right side
   99,439x = 7,510,075,661.46
5. Step 5: Solve for x
   x = 7,510,075,661.46/99,439
6. Step 6: Final answer
   x = 75,524.45