Finding the Fourth Proportional to 35,680.56, 49,192.50 and 30,698.31

Step by Step Solution

1. Step 1: Write the proportion equation
   35,680.56 : 49,192.50 = 30,698.31 : x
2. Step 2: Convert to fraction form
   35,680.56/49,192.50 = 30,698.31/x
3. Step 3: Cross multiply
   35,680.56x = 49,192.50 × 30,698.31
4. Step 4: Simplify right side
   35,680.56x = 1,510,126,445.46
5. Step 5: Solve for x
   x = 1,510,126,445.46/35,680.56
6. Step 6: Final answer
   x = 42,323.50