Finding the Fourth Proportional to 143,256.52, 214,810.62 and 64,302.76

Step by Step Solution

1. Step 1: Write the proportion equation
   143,256.52 : 214,810.62 = 64,302.76 : x
2. Step 2: Convert to fraction form
   143,256.52/214,810.62 = 64,302.76/x
3. Step 3: Cross multiply
   143,256.52x = 214,810.62 × 64,302.76
4. Step 4: Simplify right side
   143,256.52x = 13,812,915,743.31
5. Step 5: Solve for x
   x = 13,812,915,743.31/143,256.52
6. Step 6: Final answer
   x = 96,420.85