Finding the Fourth Proportional to 99,827.83, 137,762.69 and 54,506.20

Step by Step Solution

1. Step 1: Write the proportion equation
   99,827.83 : 137,762.69 = 54,506.20 : x
2. Step 2: Convert to fraction form
   99,827.83/137,762.69 = 54,506.20/x
3. Step 3: Cross multiply
   99,827.83x = 137,762.69 × 54,506.20
4. Step 4: Simplify right side
   99,827.83x = 7,508,920,461.15
5. Step 5: Solve for x
   x = 7,508,920,461.15/99,827.83
6. Step 6: Final answer
   x = 75,218.71