Finding the Fourth Proportional to 143,223.30, 214,904.61 and 57,830.67

Step by Step Solution

1. Step 1: Write the proportion equation
   143,223.30 : 214,904.61 = 57,830.67 : x
2. Step 2: Convert to fraction form
   143,223.30/214,904.61 = 57,830.67/x
3. Step 3: Cross multiply
   143,223.30x = 214,904.61 × 57,830.67
4. Step 4: Simplify right side
   143,223.30x = 12,428,077,582.39
5. Step 5: Solve for x
   x = 12,428,077,582.39/143,223.30
6. Step 6: Final answer
   x = 86,774.13