Finding the Fourth Proportional to 42,733.31, 64,122.92 and 17,790.58

Step by Step Solution

1. Step 1: Write the proportion equation
   42,733.31 : 64,122.92 = 17,790.58 : x
2. Step 2: Convert to fraction form
   42,733.31/64,122.92 = 17,790.58/x
3. Step 3: Cross multiply
   42,733.31x = 64,122.92 × 17,790.58
4. Step 4: Simplify right side
   42,733.31x = 1,140,783,528.53
5. Step 5: Solve for x
   x = 1,140,783,528.53/42,733.31
6. Step 6: Final answer
   x = 26,695.42