Finding the Fourth Proportional to 42,723.15, 64,077.82 and 14,642.07

Step by Step Solution

1. Step 1: Write the proportion equation
   42,723.15 : 64,077.82 = 14,642.07 : x
2. Step 2: Convert to fraction form
   42,723.15/64,077.82 = 14,642.07/x
3. Step 3: Cross multiply
   42,723.15x = 64,077.82 × 14,642.07
4. Step 4: Simplify right side
   42,723.15x = 938,231,925.89
5. Step 5: Solve for x
   x = 938,231,925.89/42,723.15
6. Step 6: Final answer
   x = 21,960.74