Finding the Fourth Proportional to 105,885.96, 146,124.98 and 58,139.49

Step by Step Solution

1. Step 1: Write the proportion equation
   105,885.96 : 146,124.98 = 58,139.49 : x
2. Step 2: Convert to fraction form
   105,885.96/146,124.98 = 58,139.49/x
3. Step 3: Cross multiply
   105,885.96x = 146,124.98 × 58,139.49
4. Step 4: Simplify right side
   105,885.96x = 8,495,631,813.46
5. Step 5: Solve for x
   x = 8,495,631,813.46/105,885.96
6. Step 6: Final answer
   x = 80,233.79