Finding the Fourth Proportional to 99,335.69, 137,083.40 and 54,013.63

Step by Step Solution

1. Step 1: Write the proportion equation
   99,335.69 : 137,083.40 = 54,013.63 : x
2. Step 2: Convert to fraction form
   99,335.69/137,083.40 = 54,013.63/x
3. Step 3: Cross multiply
   99,335.69x = 137,083.40 × 54,013.63
4. Step 4: Simplify right side
   99,335.69x = 7,404,371,839.07
5. Step 5: Solve for x
   x = 7,404,371,839.07/99,335.69
6. Step 6: Final answer
   x = 74,538.89