Finding the Fourth Proportional to 312,498.24, 468,120.42 and 143,783.52

Step by Step Solution

1. Step 1: Write the proportion equation
   312,498.24 : 468,120.42 = 143,783.52 : x
2. Step 2: Convert to fraction form
   312,498.24/468,120.42 = 143,783.52/x
3. Step 3: Cross multiply
   312,498.24x = 468,120.42 × 143,783.52
4. Step 4: Simplify right side
   312,498.24x = 67,308,001,771.48
5. Step 5: Solve for x
   x = 67,308,001,771.48/312,498.24
6. Step 6: Final answer
   x = 215,386.82