Finding the Fourth Proportional to 42,695.88, 64,051.98 and 13,108.44

Step by Step Solution

1. Step 1: Write the proportion equation
   42,695.88 : 64,051.98 = 13,108.44 : x
2. Step 2: Convert to fraction form
   42,695.88/64,051.98 = 13,108.44/x
3. Step 3: Cross multiply
   42,695.88x = 64,051.98 × 13,108.44
4. Step 4: Simplify right side
   42,695.88x = 839,621,536.71
5. Step 5: Solve for x
   x = 839,621,536.71/42,695.88
6. Step 6: Final answer
   x = 19,665.17