Finding the Fourth Proportional to 105,460.14, 145,534.98 and 57,713.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,460.14 : 145,534.98 = 57,713.52 : x
2. Step 2: Convert to fraction form
   105,460.14/145,534.98 = 57,713.52/x
3. Step 3: Cross multiply
   105,460.14x = 145,534.98 × 57,713.52
4. Step 4: Simplify right side
   105,460.14x = 8,399,335,978.93
5. Step 5: Solve for x
   x = 8,399,335,978.93/105,460.14
6. Step 6: Final answer
   x = 79,644.65