Finding the Fourth Proportional to 143,886.24, 215,792.54 and 42,660.62

Step by Step Solution

1. Step 1: Write the proportion equation
   143,886.24 : 215,792.54 = 42,660.62 : x
2. Step 2: Convert to fraction form
   143,886.24/215,792.54 = 42,660.62/x
3. Step 3: Cross multiply
   143,886.24x = 215,792.54 × 42,660.62
4. Step 4: Simplify right side
   143,886.24x = 9,205,844,071.59
5. Step 5: Solve for x
   x = 9,205,844,071.59/143,886.24
6. Step 6: Final answer
   x = 63,980.02