Finding the Fourth Proportional to 143,904.73, 215,820.24 and 42,679.09

Step by Step Solution

1. Step 1: Write the proportion equation
   143,904.73 : 215,820.24 = 42,679.09 : x
2. Step 2: Convert to fraction form
   143,904.73/215,820.24 = 42,679.09/x
3. Step 3: Cross multiply
   143,904.73x = 215,820.24 × 42,679.09
4. Step 4: Simplify right side
   143,904.73x = 9,211,011,446.78
5. Step 5: Solve for x
   x = 9,211,011,446.78/143,904.73
6. Step 6: Final answer
   x = 64,007.70