Finding the Fourth Proportional to 42,654.85, 63,994.57 and 13,077.05

Step by Step Solution

1. Step 1: Write the proportion equation
   42,654.85 : 63,994.57 = 13,077.05 : x
2. Step 2: Convert to fraction form
   42,654.85/63,994.57 = 13,077.05/x
3. Step 3: Cross multiply
   42,654.85x = 63,994.57 × 13,077.05
4. Step 4: Simplify right side
   42,654.85x = 836,859,838.95
5. Step 5: Solve for x
   x = 836,859,838.95/42,654.85
6. Step 6: Final answer
   x = 19,619.34