Finding the Fourth Proportional to 105,013.57, 144,876.38 and 60,782.07

Step by Step Solution

1. Step 1: Write the proportion equation
   105,013.57 : 144,876.38 = 60,782.07 : x
2. Step 2: Convert to fraction form
   105,013.57/144,876.38 = 60,782.07/x
3. Step 3: Cross multiply
   105,013.57x = 144,876.38 × 60,782.07
4. Step 4: Simplify right side
   105,013.57x = 8,805,886,444.32
5. Step 5: Solve for x
   x = 8,805,886,444.32/105,013.57
6. Step 6: Final answer
   x = 83,854.75