Finding the Fourth Proportional to 42,326.76, 63,477.27 and 12,736.74

Step by Step Solution

1. Step 1: Write the proportion equation
   42,326.76 : 63,477.27 = 12,736.74 : x
2. Step 2: Convert to fraction form
   42,326.76/63,477.27 = 12,736.74/x
3. Step 3: Cross multiply
   42,326.76x = 63,477.27 × 12,736.74
4. Step 4: Simplify right side
   42,326.76x = 808,493,483.90
5. Step 5: Solve for x
   x = 808,493,483.90/42,326.76
6. Step 6: Final answer
   x = 19,101.24