Finding the Fourth Proportional to 42,987.07, 64,484.72 and 16,693.87

Step by Step Solution

1. Step 1: Write the proportion equation
   42,987.07 : 64,484.72 = 16,693.87 : x
2. Step 2: Convert to fraction form
   42,987.07/64,484.72 = 16,693.87/x
3. Step 3: Cross multiply
   42,987.07x = 64,484.72 × 16,693.87
4. Step 4: Simplify right side
   42,987.07x = 1,076,499,532.67
5. Step 5: Solve for x
   x = 1,076,499,532.67/42,987.07
6. Step 6: Final answer
   x = 25,042.40