Finding the Fourth Proportional to 42,921.48, 64,379.40 and 14,835

Step by Step Solution

1. Step 1: Write the proportion equation
   42,921.48 : 64,379.40 = 14,835 : x
2. Step 2: Convert to fraction form
   42,921.48/64,379.40 = 14,835/x
3. Step 3: Cross multiply
   42,921.48x = 64,379.40 × 14,835
4. Step 4: Simplify right side
   42,921.48x = 955,068,399
5. Step 5: Solve for x
   x = 955,068,399/42,921.48
6. Step 6: Final answer
   x = 22,251.53