Finding the Fourth Proportional to 83,954.72, 125,931.93 and 57,579.50

Step by Step Solution

1. Step 1: Write the proportion equation
   83,954.72 : 125,931.93 = 57,579.50 : x
2. Step 2: Convert to fraction form
   83,954.72/125,931.93 = 57,579.50/x
3. Step 3: Cross multiply
   83,954.72x = 125,931.93 × 57,579.50
4. Step 4: Simplify right side
   83,954.72x = 7,251,096,933.78
5. Step 5: Solve for x
   x = 7,251,096,933.78/83,954.72
6. Step 6: Final answer
   x = 86,369.14