Finding the Fourth Proportional to 42,746.76, 64,133.10 and 30,290.92

Step by Step Solution

1. Step 1: Write the proportion equation
   42,746.76 : 64,133.10 = 30,290.92 : x
2. Step 2: Convert to fraction form
   42,746.76/64,133.10 = 30,290.92/x
3. Step 3: Cross multiply
   42,746.76x = 64,133.10 × 30,290.92
4. Step 4: Simplify right side
   42,746.76x = 1,942,650,601.45
5. Step 5: Solve for x
   x = 1,942,650,601.45/42,746.76
6. Step 6: Final answer
   x = 45,445.56