Finding the Fourth Proportional to 143,258.59, 214,592.61 and 83,914.35

Step by Step Solution

1. Step 1: Write the proportion equation
   143,258.59 : 214,592.61 = 83,914.35 : x
2. Step 2: Convert to fraction form
   143,258.59/214,592.61 = 83,914.35/x
3. Step 3: Cross multiply
   143,258.59x = 214,592.61 × 83,914.35
4. Step 4: Simplify right side
   143,258.59x = 18,007,398,420.89
5. Step 5: Solve for x
   x = 18,007,398,420.89/143,258.59
6. Step 6: Final answer
   x = 125,698.56