Finding the Fourth Proportional to 142,095.30, 212,862.15 and 92,210.10

Step by Step Solution

1. Step 1: Write the proportion equation
   142,095.30 : 212,862.15 = 92,210.10 : x
2. Step 2: Convert to fraction form
   142,095.30/212,862.15 = 92,210.10/x
3. Step 3: Cross multiply
   142,095.30x = 212,862.15 × 92,210.10
4. Step 4: Simplify right side
   142,095.30x = 19,628,040,137.72
5. Step 5: Solve for x
   x = 19,628,040,137.72/142,095.30
6. Step 6: Final answer
   x = 138,132.93