Finding the Fourth Proportional to 99,827.91, 137,758.59 and 54,507.81

Step by Step Solution

1. Step 1: Write the proportion equation
   99,827.91 : 137,758.59 = 54,507.81 : x
2. Step 2: Convert to fraction form
   99,827.91/137,758.59 = 54,507.81/x
3. Step 3: Cross multiply
   99,827.91x = 137,758.59 × 54,507.81
4. Step 4: Simplify right side
   99,827.91x = 7,508,919,049.59
5. Step 5: Solve for x
   x = 7,508,919,049.59/99,827.91
6. Step 6: Final answer
   x = 75,218.63