Finding the Fourth Proportional to 61,941.18, 85,431.72 and 42,852.72

Step by Step Solution

1. Step 1: Write the proportion equation
   61,941.18 : 85,431.72 = 42,852.72 : x
2. Step 2: Convert to fraction form
   61,941.18/85,431.72 = 42,852.72/x
3. Step 3: Cross multiply
   61,941.18x = 85,431.72 × 42,852.72
4. Step 4: Simplify right side
   61,941.18x = 3,660,981,576.28
5. Step 5: Solve for x
   x = 3,660,981,576.28/61,941.18
6. Step 6: Final answer
   x = 59,104.16