Finding the Fourth Proportional to 99,060.50, 136,705.89 and 54,348.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,060.50 : 136,705.89 = 54,348.50 : x
2. Step 2: Convert to fraction form
   99,060.50/136,705.89 = 54,348.50/x
3. Step 3: Cross multiply
   99,060.50x = 136,705.89 × 54,348.50
4. Step 4: Simplify right side
   99,060.50x = 7,429,760,062.67
5. Step 5: Solve for x
   x = 7,429,760,062.67/99,060.50
6. Step 6: Final answer
   x = 75,002.25