Finding the Fourth Proportional to 42,746.31, 64,120.76 and 14,665.97

Step by Step Solution

1. Step 1: Write the proportion equation
   42,746.31 : 64,120.76 = 14,665.97 : x
2. Step 2: Convert to fraction form
   42,746.31/64,120.76 = 14,665.97/x
3. Step 3: Cross multiply
   42,746.31x = 64,120.76 × 14,665.97
4. Step 4: Simplify right side
   42,746.31x = 940,392,803.60
5. Step 5: Solve for x
   x = 940,392,803.60/42,746.31
6. Step 6: Final answer
   x = 21,999.39