Finding the Fourth Proportional to 423,061.14, 634,593.90 and 142,580.82

Step by Step Solution

1. Step 1: Write the proportion equation
   423,061.14 : 634,593.90 = 142,580.82 : x
2. Step 2: Convert to fraction form
   423,061.14/634,593.90 = 142,580.82/x
3. Step 3: Cross multiply
   423,061.14x = 634,593.90 × 142,580.82
4. Step 4: Simplify right side
   423,061.14x = 90,480,918,629.00
5. Step 5: Solve for x
   x = 90,480,918,629.00/423,061.14
6. Step 6: Final answer
   x = 213,871.97