Finding the Fourth Proportional to 432,667.38, 649,062.56 and 133,172.91

Step by Step Solution

1. Step 1: Write the proportion equation
   432,667.38 : 649,062.56 = 133,172.91 : x
2. Step 2: Convert to fraction form
   432,667.38/649,062.56 = 133,172.91/x
3. Step 3: Cross multiply
   432,667.38x = 649,062.56 × 133,172.91
4. Step 4: Simplify right side
   432,667.38x = 86,437,549,887.25
5. Step 5: Solve for x
   x = 86,437,549,887.25/432,667.38
6. Step 6: Final answer
   x = 199,778.29