Finding the Fourth Proportional to 83,213.72, 124,851.76 and 43,207.72

Step by Step Solution

1. Step 1: Write the proportion equation
   83,213.72 : 124,851.76 = 43,207.72 : x
2. Step 2: Convert to fraction form
   83,213.72/124,851.76 = 43,207.72/x
3. Step 3: Cross multiply
   83,213.72x = 124,851.76 × 43,207.72
4. Step 4: Simplify right side
   83,213.72x = 5,394,559,887.59
5. Step 5: Solve for x
   x = 5,394,559,887.59/83,213.72
6. Step 6: Final answer
   x = 64,827.77