Finding the Fourth Proportional to 99,588.02, 137,429.72 and 54,266.33

Step by Step Solution

1. Step 1: Write the proportion equation
   99,588.02 : 137,429.72 = 54,266.33 : x
2. Step 2: Convert to fraction form
   99,588.02/137,429.72 = 54,266.33/x
3. Step 3: Cross multiply
   99,588.02x = 137,429.72 × 54,266.33
4. Step 4: Simplify right side
   99,588.02x = 7,457,806,537.33
5. Step 5: Solve for x
   x = 7,457,806,537.33/99,588.02
6. Step 6: Final answer
   x = 74,886.58