Finding the Fourth Proportional to 143,217.75, 214,752.78 and 98,307.72

Step by Step Solution

1. Step 1: Write the proportion equation
   143,217.75 : 214,752.78 = 98,307.72 : x
2. Step 2: Convert to fraction form
   143,217.75/214,752.78 = 98,307.72/x
3. Step 3: Cross multiply
   143,217.75x = 214,752.78 × 98,307.72
4. Step 4: Simplify right side
   143,217.75x = 21,111,856,165.46
5. Step 5: Solve for x
   x = 21,111,856,165.46/143,217.75
6. Step 6: Final answer
   x = 147,410.89