Finding the Fourth Proportional to 72,792.19, 109,123.35 and 28,408.63

Step by Step Solution

1. Step 1: Write the proportion equation
   72,792.19 : 109,123.35 = 28,408.63 : x
2. Step 2: Convert to fraction form
   72,792.19/109,123.35 = 28,408.63/x
3. Step 3: Cross multiply
   72,792.19x = 109,123.35 × 28,408.63
4. Step 4: Simplify right side
   72,792.19x = 3,100,044,874.51
5. Step 5: Solve for x
   x = 3,100,044,874.51/72,792.19
6. Step 6: Final answer
   x = 42,587.60