Finding the Fourth Proportional to 105,006.32, 144,886.20 and 62,578.88

Step by Step Solution

1. Step 1: Write the proportion equation
   105,006.32 : 144,886.20 = 62,578.88 : x
2. Step 2: Convert to fraction form
   105,006.32/144,886.20 = 62,578.88/x
3. Step 3: Cross multiply
   105,006.32x = 144,886.20 × 62,578.88
4. Step 4: Simplify right side
   105,006.32x = 9,066,816,123.46
5. Step 5: Solve for x
   x = 9,066,816,123.46/105,006.32
6. Step 6: Final answer
   x = 86,345.43