Finding the Fourth Proportional to 99,139.94, 136,815.61 and 53,817.94

Step by Step Solution

1. Step 1: Write the proportion equation
   99,139.94 : 136,815.61 = 53,817.94 : x
2. Step 2: Convert to fraction form
   99,139.94/136,815.61 = 53,817.94/x
3. Step 3: Cross multiply
   99,139.94x = 136,815.61 × 53,817.94
4. Step 4: Simplify right side
   99,139.94x = 7,363,134,290.04
5. Step 5: Solve for x
   x = 7,363,134,290.04/99,139.94
6. Step 6: Final answer
   x = 74,270.11