Finding the Fourth Proportional to 105,909.78, 146,158.04 and 58,164.16

Step by Step Solution

1. Step 1: Write the proportion equation
   105,909.78 : 146,158.04 = 58,164.16 : x
2. Step 2: Convert to fraction form
   105,909.78/146,158.04 = 58,164.16/x
3. Step 3: Cross multiply
   105,909.78x = 146,158.04 × 58,164.16
4. Step 4: Simplify right side
   105,909.78x = 8,501,158,893.06
5. Step 5: Solve for x
   x = 8,501,158,893.06/105,909.78
6. Step 6: Final answer
   x = 80,267.93