Finding the Fourth Proportional to 99,225.39, 136,928.73 and 53,902.35

Step by Step Solution

1. Step 1: Write the proportion equation
   99,225.39 : 136,928.73 = 53,902.35 : x
2. Step 2: Convert to fraction form
   99,225.39/136,928.73 = 53,902.35/x
3. Step 3: Cross multiply
   99,225.39x = 136,928.73 × 53,902.35
4. Step 4: Simplify right side
   99,225.39x = 7,380,780,329.52
5. Step 5: Solve for x
   x = 7,380,780,329.52/99,225.39
6. Step 6: Final answer
   x = 74,383.99