Finding the Fourth Proportional to 133,039.67, 199,386.23 and 54,061.57

Step by Step Solution

1. Step 1: Write the proportion equation
   133,039.67 : 199,386.23 = 54,061.57 : x
2. Step 2: Convert to fraction form
   133,039.67/199,386.23 = 54,061.57/x
3. Step 3: Cross multiply
   133,039.67x = 199,386.23 × 54,061.57
4. Step 4: Simplify right side
   133,039.67x = 10,779,132,630.18
5. Step 5: Solve for x
   x = 10,779,132,630.18/133,039.67
6. Step 6: Final answer
   x = 81,021.94