Finding the Fourth Proportional to 105,045.30, 144,958.93 and 62,603.06

Step by Step Solution

1. Step 1: Write the proportion equation
   105,045.30 : 144,958.93 = 62,603.06 : x
2. Step 2: Convert to fraction form
   105,045.30/144,958.93 = 62,603.06/x
3. Step 3: Cross multiply
   105,045.30x = 144,958.93 × 62,603.06
4. Step 4: Simplify right side
   105,045.30x = 9,074,872,592.33
5. Step 5: Solve for x
   x = 9,074,872,592.33/105,045.30
6. Step 6: Final answer
   x = 86,390.09