Finding the Fourth Proportional to 143,513.68, 215,278.56 and 43,677.12

Step by Step Solution

1. Step 1: Write the proportion equation
   143,513.68 : 215,278.56 = 43,677.12 : x
2. Step 2: Convert to fraction form
   143,513.68/215,278.56 = 43,677.12/x
3. Step 3: Cross multiply
   143,513.68x = 215,278.56 × 43,677.12
4. Step 4: Simplify right side
   143,513.68x = 9,402,747,498.55
5. Step 5: Solve for x
   x = 9,402,747,498.55/143,513.68
6. Step 6: Final answer
   x = 65,518.13