Finding the Fourth Proportional to 105,987.89, 159,005.19 and 58,672

Step by Step Solution

1. Step 1: Write the proportion equation
   105,987.89 : 159,005.19 = 58,672 : x
2. Step 2: Convert to fraction form
   105,987.89/159,005.19 = 58,672/x
3. Step 3: Cross multiply
   105,987.89x = 159,005.19 × 58,672
4. Step 4: Simplify right side
   105,987.89x = 9,329,152,507.68
5. Step 5: Solve for x
   x = 9,329,152,507.68/105,987.89
6. Step 6: Final answer
   x = 88,020.93