Finding the Fourth Proportional to 105,837.28, 146,045.90 and 58,089.58

Step by Step Solution

1. Step 1: Write the proportion equation
   105,837.28 : 146,045.90 = 58,089.58 : x
2. Step 2: Convert to fraction form
   105,837.28/146,045.90 = 58,089.58/x
3. Step 3: Cross multiply
   105,837.28x = 146,045.90 × 58,089.58
4. Step 4: Simplify right side
   105,837.28x = 8,483,744,991.72
5. Step 5: Solve for x
   x = 8,483,744,991.72/105,837.28
6. Step 6: Final answer
   x = 80,158.38