Finding the Fourth Proportional to 42,696.60, 58,910.33 and 28,377.23

Step by Step Solution

1. Step 1: Write the proportion equation
   42,696.60 : 58,910.33 = 28,377.23 : x
2. Step 2: Convert to fraction form
   42,696.60/58,910.33 = 28,377.23/x
3. Step 3: Cross multiply
   42,696.60x = 58,910.33 × 28,377.23
4. Step 4: Simplify right side
   42,696.60x = 1,671,711,547.35
5. Step 5: Solve for x
   x = 1,671,711,547.35/42,696.60
6. Step 6: Final answer
   x = 39,153.27