Finding the Fourth Proportional to 67,200.72, 92,735.64 and 42,064.08

Step by Step Solution

1. Step 1: Write the proportion equation
   67,200.72 : 92,735.64 = 42,064.08 : x
2. Step 2: Convert to fraction form
   67,200.72/92,735.64 = 42,064.08/x
3. Step 3: Cross multiply
   67,200.72x = 92,735.64 × 42,064.08
4. Step 4: Simplify right side
   67,200.72x = 3,900,839,379.81
5. Step 5: Solve for x
   x = 3,900,839,379.81/67,200.72
6. Step 6: Final answer
   x = 58,047.58