Finding the Fourth Proportional to 106,211.89, 146,572.38 and 58,465

Step by Step Solution

1. Step 1: Write the proportion equation
   106,211.89 : 146,572.38 = 58,465 : x
2. Step 2: Convert to fraction form
   106,211.89/146,572.38 = 58,465/x
3. Step 3: Cross multiply
   106,211.89x = 146,572.38 × 58,465
4. Step 4: Simplify right side
   106,211.89x = 8,569,354,196.70
5. Step 5: Solve for x
   x = 8,569,354,196.70/106,211.89
6. Step 6: Final answer
   x = 80,681.68