Finding the Fourth Proportional to 31,046.64, 42,845.88 and 18,303.60

Step by Step Solution

1. Step 1: Write the proportion equation
   31,046.64 : 42,845.88 = 18,303.60 : x
2. Step 2: Convert to fraction form
   31,046.64/42,845.88 = 18,303.60/x
3. Step 3: Cross multiply
   31,046.64x = 42,845.88 × 18,303.60
4. Step 4: Simplify right side
   31,046.64x = 784,233,849.17
5. Step 5: Solve for x
   x = 784,233,849.17/31,046.64
6. Step 6: Final answer
   x = 25,259.86