Finding the Fourth Proportional to 105,668.02, 145,826.76 and 57,925

Step by Step Solution

1. Step 1: Write the proportion equation
   105,668.02 : 145,826.76 = 57,925 : x
2. Step 2: Convert to fraction form
   105,668.02/145,826.76 = 57,925/x
3. Step 3: Cross multiply
   105,668.02x = 145,826.76 × 57,925
4. Step 4: Simplify right side
   105,668.02x = 8,447,015,073.00
5. Step 5: Solve for x
   x = 8,447,015,073.00/105,668.02
6. Step 6: Final answer
   x = 79,939.18