Finding the Fourth Proportional to 105,150.88, 145,101.54 and 62,710.12

Step by Step Solution

1. Step 1: Write the proportion equation
   105,150.88 : 145,101.54 = 62,710.12 : x
2. Step 2: Convert to fraction form
   105,150.88/145,101.54 = 62,710.12/x
3. Step 3: Cross multiply
   105,150.88x = 145,101.54 × 62,710.12
4. Step 4: Simplify right side
   105,150.88x = 9,099,334,985.58
5. Step 5: Solve for x
   x = 9,099,334,985.58/105,150.88
6. Step 6: Final answer
   x = 86,535.99