Finding the Fourth Proportional to 105,918, 146,161.71 and 58,162.02

Step by Step Solution

1. Step 1: Write the proportion equation
   105,918 : 146,161.71 = 58,162.02 : x
2. Step 2: Convert to fraction form
   105,918/146,161.71 = 58,162.02/x
3. Step 3: Cross multiply
   105,918x = 146,161.71 × 58,162.02
4. Step 4: Simplify right side
   105,918x = 8,501,060,300.25
5. Step 5: Solve for x
   x = 8,501,060,300.25/105,918
6. Step 6: Final answer
   x = 80,260.77