Finding the Fourth Proportional to 143,412, 215,195.76 and 69,540

Step by Step Solution

1. Step 1: Write the proportion equation
   143,412 : 215,195.76 = 69,540 : x
2. Step 2: Convert to fraction form
   143,412/215,195.76 = 69,540/x
3. Step 3: Cross multiply
   143,412x = 215,195.76 × 69,540
4. Step 4: Simplify right side
   143,412x = 14,964,713,150.40
5. Step 5: Solve for x
   x = 14,964,713,150.40/143,412
6. Step 6: Final answer
   x = 104,347.71