Finding the Fourth Proportional to 93,883.83, 140,142.82 and 86,945.57

Step by Step Solution

1. Step 1: Write the proportion equation
   93,883.83 : 140,142.82 = 86,945.57 : x
2. Step 2: Convert to fraction form
   93,883.83/140,142.82 = 86,945.57/x
3. Step 3: Cross multiply
   93,883.83x = 140,142.82 × 86,945.57
4. Step 4: Simplify right side
   93,883.83x = 12,184,797,599.05
5. Step 5: Solve for x
   x = 12,184,797,599.05/93,883.83
6. Step 6: Final answer
   x = 129,785.90