Finding the Fourth Proportional to 142,500.02, 213,915.70 and 83,378.12

Step by Step Solution

1. Step 1: Write the proportion equation
   142,500.02 : 213,915.70 = 83,378.12 : x
2. Step 2: Convert to fraction form
   142,500.02/213,915.70 = 83,378.12/x
3. Step 3: Cross multiply
   142,500.02x = 213,915.70 × 83,378.12
4. Step 4: Simplify right side
   142,500.02x = 17,835,888,904.48
5. Step 5: Solve for x
   x = 17,835,888,904.48/142,500.02
6. Step 6: Final answer
   x = 125,164.12