Finding the Fourth Proportional to 99,368.27, 137,121.15 and 54,045.33

Step by Step Solution

1. Step 1: Write the proportion equation
   99,368.27 : 137,121.15 = 54,045.33 : x
2. Step 2: Convert to fraction form
   99,368.27/137,121.15 = 54,045.33/x
3. Step 3: Cross multiply
   99,368.27x = 137,121.15 × 54,045.33
4. Step 4: Simplify right side
   99,368.27x = 7,410,757,116.12
5. Step 5: Solve for x
   x = 7,410,757,116.12/99,368.27
6. Step 6: Final answer
   x = 74,578.71