Finding the Fourth Proportional to 103,696.43, 143,105.40 and 58,374.50

Step by Step Solution

1. Step 1: Write the proportion equation
   103,696.43 : 143,105.40 = 58,374.50 : x
2. Step 2: Convert to fraction form
   103,696.43/143,105.40 = 58,374.50/x
3. Step 3: Cross multiply
   103,696.43x = 143,105.40 × 58,374.50
4. Step 4: Simplify right side
   103,696.43x = 8,353,705,456.77
5. Step 5: Solve for x
   x = 8,353,705,456.77/103,696.43
6. Step 6: Final answer
   x = 80,559.24