Finding the Fourth Proportional to 143,505.84, 215,184.17 and 42,290.62

Step by Step Solution

1. Step 1: Write the proportion equation
   143,505.84 : 215,184.17 = 42,290.62 : x
2. Step 2: Convert to fraction form
   143,505.84/215,184.17 = 42,290.62/x
3. Step 3: Cross multiply
   143,505.84x = 215,184.17 × 42,290.62
4. Step 4: Simplify right side
   143,505.84x = 9,100,271,963.49
5. Step 5: Solve for x
   x = 9,100,271,963.49/143,505.84
6. Step 6: Final answer
   x = 63,413.95