Finding the Fourth Proportional to 60,071.72, 82,918.64 and 42,171.12

Step by Step Solution

1. Step 1: Write the proportion equation
   60,071.72 : 82,918.64 = 42,171.12 : x
2. Step 2: Convert to fraction form
   60,071.72/82,918.64 = 42,171.12/x
3. Step 3: Cross multiply
   60,071.72x = 82,918.64 × 42,171.12
4. Step 4: Simplify right side
   60,071.72x = 3,496,771,706.82
5. Step 5: Solve for x
   x = 3,496,771,706.82/60,071.72
6. Step 6: Final answer
   x = 58,209.95