Finding the Fourth Proportional to 99,667.26, 137,540.13 and 54,345.33

Step by Step Solution

1. Step 1: Write the proportion equation
   99,667.26 : 137,540.13 = 54,345.33 : x
2. Step 2: Convert to fraction form
   99,667.26/137,540.13 = 54,345.33/x
3. Step 3: Cross multiply
   99,667.26x = 137,540.13 × 54,345.33
4. Step 4: Simplify right side
   99,667.26x = 7,474,663,549.30
5. Step 5: Solve for x
   x = 7,474,663,549.30/99,667.26
6. Step 6: Final answer
   x = 74,996.18