Finding the Fourth Proportional to 99,839.87, 137,784.59 and 54,522.06

Step by Step Solution

1. Step 1: Write the proportion equation
   99,839.87 : 137,784.59 = 54,522.06 : x
2. Step 2: Convert to fraction form
   99,839.87/137,784.59 = 54,522.06/x
3. Step 3: Cross multiply
   99,839.87x = 137,784.59 × 54,522.06
4. Step 4: Simplify right side
   99,839.87x = 7,512,300,179.94
5. Step 5: Solve for x
   x = 7,512,300,179.94/99,839.87
6. Step 6: Final answer
   x = 75,243.49