Finding the Fourth Proportional to 142,726.10, 214,089.15 and 83,531.30

Step by Step Solution

1. Step 1: Write the proportion equation
   142,726.10 : 214,089.15 = 83,531.30 : x
2. Step 2: Convert to fraction form
   142,726.10/214,089.15 = 83,531.30/x
3. Step 3: Cross multiply
   142,726.10x = 214,089.15 × 83,531.30
4. Step 4: Simplify right side
   142,726.10x = 17,883,145,015.40
5. Step 5: Solve for x
   x = 17,883,145,015.40/142,726.10
6. Step 6: Final answer
   x = 125,296.95