Finding the Fourth Proportional to 105,802.15, 146,006.57 and 58,056.30

Step by Step Solution

1. Step 1: Write the proportion equation
   105,802.15 : 146,006.57 = 58,056.30 : x
2. Step 2: Convert to fraction form
   105,802.15/146,006.57 = 58,056.30/x
3. Step 3: Cross multiply
   105,802.15x = 146,006.57 × 58,056.30
4. Step 4: Simplify right side
   105,802.15x = 8,476,601,229.89
5. Step 5: Solve for x
   x = 8,476,601,229.89/105,802.15
6. Step 6: Final answer
   x = 80,117.48