Finding the Fourth Proportional to 42,667.98, 64,003.34 and 14,586.90

Step by Step Solution

1. Step 1: Write the proportion equation
   42,667.98 : 64,003.34 = 14,586.90 : x
2. Step 2: Convert to fraction form
   42,667.98/64,003.34 = 14,586.90/x
3. Step 3: Cross multiply
   42,667.98x = 64,003.34 × 14,586.90
4. Step 4: Simplify right side
   42,667.98x = 933,610,320.25
5. Step 5: Solve for x
   x = 933,610,320.25/42,667.98
6. Step 6: Final answer
   x = 21,880.82