Finding the Fourth Proportional to 99,150.08, 136,828.17 and 53,828.55

Step by Step Solution

1. Step 1: Write the proportion equation
   99,150.08 : 136,828.17 = 53,828.55 : x
2. Step 2: Convert to fraction form
   99,150.08/136,828.17 = 53,828.55/x
3. Step 3: Cross multiply
   99,150.08x = 136,828.17 × 53,828.55
4. Step 4: Simplify right side
   99,150.08x = 7,365,261,990.25
5. Step 5: Solve for x
   x = 7,365,261,990.25/99,150.08
6. Step 6: Final answer
   x = 74,283.98