Finding the Fourth Proportional to 99,820.52, 137,752.40 and 55,108.52

Step by Step Solution

1. Step 1: Write the proportion equation
   99,820.52 : 137,752.40 = 55,108.52 : x
2. Step 2: Convert to fraction form
   99,820.52/137,752.40 = 55,108.52/x
3. Step 3: Cross multiply
   99,820.52x = 137,752.40 × 55,108.52
4. Step 4: Simplify right side
   99,820.52x = 7,591,330,890.45
5. Step 5: Solve for x
   x = 7,591,330,890.45/99,820.52
6. Step 6: Final answer
   x = 76,049.80