Finding the Fourth Proportional to 99,798.82, 137,722.89 and 55,086.82

Step by Step Solution

1. Step 1: Write the proportion equation
   99,798.82 : 137,722.89 = 55,086.82 : x
2. Step 2: Convert to fraction form
   99,798.82/137,722.89 = 55,086.82/x
3. Step 3: Cross multiply
   99,798.82x = 137,722.89 × 55,086.82
4. Step 4: Simplify right side
   99,798.82x = 7,586,716,051.31
5. Step 5: Solve for x
   x = 7,586,716,051.31/99,798.82
6. Step 6: Final answer
   x = 76,020.10