Finding the Fourth Proportional to 42,746.04, 64,131.96 and 12,761.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,746.04 : 64,131.96 = 12,761.25 : x
2. Step 2: Convert to fraction form
   42,746.04/64,131.96 = 12,761.25/x
3. Step 3: Cross multiply
   42,746.04x = 64,131.96 × 12,761.25
4. Step 4: Simplify right side
   42,746.04x = 818,403,974.55
5. Step 5: Solve for x
   x = 818,403,974.55/42,746.04
6. Step 6: Final answer
   x = 19,145.73