Finding the Fourth Proportional to 142,806.10, 214,063.35 and 83,611.30

Step by Step Solution

1. Step 1: Write the proportion equation
   142,806.10 : 214,063.35 = 83,611.30 : x
2. Step 2: Convert to fraction form
   142,806.10/214,063.35 = 83,611.30/x
3. Step 3: Cross multiply
   142,806.10x = 214,063.35 × 83,611.30
4. Step 4: Simplify right side
   142,806.10x = 17,898,114,975.86
5. Step 5: Solve for x
   x = 17,898,114,975.86/142,806.10
6. Step 6: Final answer
   x = 125,331.59