Finding the Fourth Proportional to 142,695.02, 213,999.82 and 89,467.89

Step by Step Solution

1. Step 1: Write the proportion equation
   142,695.02 : 213,999.82 = 89,467.89 : x
2. Step 2: Convert to fraction form
   142,695.02/213,999.82 = 89,467.89/x
3. Step 3: Cross multiply
   142,695.02x = 213,999.82 × 89,467.89
4. Step 4: Simplify right side
   142,695.02x = 19,146,111,329.61
5. Step 5: Solve for x
   x = 19,146,111,329.61/142,695.02
6. Step 6: Final answer
   x = 134,175.05