Finding the Fourth Proportional to 42,508.67, 64,009.98 and 31,493.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,508.67 : 64,009.98 = 31,493.48 : x
2. Step 2: Convert to fraction form
   42,508.67/64,009.98 = 31,493.48/x
3. Step 3: Cross multiply
   42,508.67x = 64,009.98 × 31,493.48
4. Step 4: Simplify right side
   42,508.67x = 2,015,896,704.88
5. Step 5: Solve for x
   x = 2,015,896,704.88/42,508.67
6. Step 6: Final answer
   x = 47,423.19