Finding the Fourth Proportional to 52,389.63, 78,600.84 and 33,690.78

Step by Step Solution

1. Step 1: Write the proportion equation
   52,389.63 : 78,600.84 = 33,690.78 : x
2. Step 2: Convert to fraction form
   52,389.63/78,600.84 = 33,690.78/x
3. Step 3: Cross multiply
   52,389.63x = 78,600.84 × 33,690.78
4. Step 4: Simplify right side
   52,389.63x = 2,648,123,608.26
5. Step 5: Solve for x
   x = 2,648,123,608.26/52,389.63
6. Step 6: Final answer
   x = 50,546.71