Finding the Fourth Proportional to 99,147.69, 136,824.17 and 53,825.76

Step by Step Solution

1. Step 1: Write the proportion equation
   99,147.69 : 136,824.17 = 53,825.76 : x
2. Step 2: Convert to fraction form
   99,147.69/136,824.17 = 53,825.76/x
3. Step 3: Cross multiply
   99,147.69x = 136,824.17 × 53,825.76
4. Step 4: Simplify right side
   99,147.69x = 7,364,664,936.62
5. Step 5: Solve for x
   x = 7,364,664,936.62/99,147.69
6. Step 6: Final answer
   x = 74,279.74