Finding the Fourth Proportional to 105,810.74, 146,018.39 and 58,064.88

Step by Step Solution

1. Step 1: Write the proportion equation
   105,810.74 : 146,018.39 = 58,064.88 : x
2. Step 2: Convert to fraction form
   105,810.74/146,018.39 = 58,064.88/x
3. Step 3: Cross multiply
   105,810.74x = 146,018.39 × 58,064.88
4. Step 4: Simplify right side
   105,810.74x = 8,478,540,002.82
5. Step 5: Solve for x
   x = 8,478,540,002.82/105,810.74
6. Step 6: Final answer
   x = 80,129.30