Finding the Fourth Proportional to 99,834.71, 137,772.56 and 54,513

Step by Step Solution

1. Step 1: Write the proportion equation
   99,834.71 : 137,772.56 = 54,513 : x
2. Step 2: Convert to fraction form
   99,834.71/137,772.56 = 54,513/x
3. Step 3: Cross multiply
   99,834.71x = 137,772.56 × 54,513
4. Step 4: Simplify right side
   99,834.71x = 7,510,395,290.72
5. Step 5: Solve for x
   x = 7,510,395,290.72/99,834.71
6. Step 6: Final answer
   x = 75,228.30