Finding the Fourth Proportional to 99,766, 137,677.26 and 55,054

Step by Step Solution

1. Step 1: Write the proportion equation
   99,766 : 137,677.26 = 55,054 : x
2. Step 2: Convert to fraction form
   99,766/137,677.26 = 55,054/x
3. Step 3: Cross multiply
   99,766x = 137,677.26 × 55,054
4. Step 4: Simplify right side
   99,766x = 7,579,683,872.04
5. Step 5: Solve for x
   x = 7,579,683,872.04/99,766
6. Step 6: Final answer
   x = 75,974.62