Finding the Fourth Proportional to 42,748.62, 64,414.73 and 35,128.14

Step by Step Solution

1. Step 1: Write the proportion equation
   42,748.62 : 64,414.73 = 35,128.14 : x
2. Step 2: Convert to fraction form
   42,748.62/64,414.73 = 35,128.14/x
3. Step 3: Cross multiply
   42,748.62x = 64,414.73 × 35,128.14
4. Step 4: Simplify right side
   42,748.62x = 2,262,769,477.86
5. Step 5: Solve for x
   x = 2,262,769,477.86/42,748.62
6. Step 6: Final answer
   x = 52,931.99