Finding the Fourth Proportional to 42,810.93, 64,215.18 and 16,521.37

Step by Step Solution

1. Step 1: Write the proportion equation
   42,810.93 : 64,215.18 = 16,521.37 : x
2. Step 2: Convert to fraction form
   42,810.93/64,215.18 = 16,521.37/x
3. Step 3: Cross multiply
   42,810.93x = 64,215.18 × 16,521.37
4. Step 4: Simplify right side
   42,810.93x = 1,060,922,587.86
5. Step 5: Solve for x
   x = 1,060,922,587.86/42,810.93
6. Step 6: Final answer
   x = 24,781.58