Finding the Fourth Proportional to 99,722.82, 137,607.90 and 55,007.94

Step by Step Solution

1. Step 1: Write the proportion equation
   99,722.82 : 137,607.90 = 55,007.94 : x
2. Step 2: Convert to fraction form
   99,722.82/137,607.90 = 55,007.94/x
3. Step 3: Cross multiply
   99,722.82x = 137,607.90 × 55,007.94
4. Step 4: Simplify right side
   99,722.82x = 7,569,527,106.73
5. Step 5: Solve for x
   x = 7,569,527,106.73/99,722.82
6. Step 6: Final answer
   x = 75,905.67