Finding the Fourth Proportional to 99,810.50, 137,738.49 and 55,098.82

Step by Step Solution

1. Step 1: Write the proportion equation
   99,810.50 : 137,738.49 = 55,098.82 : x
2. Step 2: Convert to fraction form
   99,810.50/137,738.49 = 55,098.82/x
3. Step 3: Cross multiply
   99,810.50x = 137,738.49 × 55,098.82
4. Step 4: Simplify right side
   99,810.50x = 7,589,228,267.58
5. Step 5: Solve for x
   x = 7,589,228,267.58/99,810.50
6. Step 6: Final answer
   x = 76,036.37