Finding the Fourth Proportional to 143,635.49, 215,476.59 and 42,443.81

Step by Step Solution

1. Step 1: Write the proportion equation
   143,635.49 : 215,476.59 = 42,443.81 : x
2. Step 2: Convert to fraction form
   143,635.49/215,476.59 = 42,443.81/x
3. Step 3: Cross multiply
   143,635.49x = 215,476.59 × 42,443.81
4. Step 4: Simplify right side
   143,635.49x = 9,145,646,368.02
5. Step 5: Solve for x
   x = 9,145,646,368.02/143,635.49
6. Step 6: Final answer
   x = 63,672.61