Finding the Fourth Proportional to 42,656.68, 63,994.38 and 13,076.74

Step by Step Solution

1. Step 1: Write the proportion equation
   42,656.68 : 63,994.38 = 13,076.74 : x
2. Step 2: Convert to fraction form
   42,656.68/63,994.38 = 13,076.74/x
3. Step 3: Cross multiply
   42,656.68x = 63,994.38 × 13,076.74
4. Step 4: Simplify right side
   42,656.68x = 836,837,868.72
5. Step 5: Solve for x
   x = 836,837,868.72/42,656.68
6. Step 6: Final answer
   x = 19,617.98