Finding the Fourth Proportional to 105,695.77, 145,866.13 and 62,700.72

Step by Step Solution

1. Step 1: Write the proportion equation
   105,695.77 : 145,866.13 = 62,700.72 : x
2. Step 2: Convert to fraction form
   105,695.77/145,866.13 = 62,700.72/x
3. Step 3: Cross multiply
   105,695.77x = 145,866.13 × 62,700.72
4. Step 4: Simplify right side
   105,695.77x = 9,145,910,670.86
5. Step 5: Solve for x
   x = 9,145,910,670.86/105,695.77
6. Step 6: Final answer
   x = 86,530.53