Finding the Fourth Proportional to 42,686.09, 64,012.72 and 29,498.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,686.09 : 64,012.72 = 29,498.48 : x
2. Step 2: Convert to fraction form
   42,686.09/64,012.72 = 29,498.48/x
3. Step 3: Cross multiply
   42,686.09x = 64,012.72 × 29,498.48
4. Step 4: Simplify right side
   42,686.09x = 1,888,277,940.67
5. Step 5: Solve for x
   x = 1,888,277,940.67/42,686.09
6. Step 6: Final answer
   x = 44,236.38