Finding the Fourth Proportional to 61,196.18, 91,720.46 and 31,597.87

Step by Step Solution

1. Step 1: Write the proportion equation
   61,196.18 : 91,720.46 = 31,597.87 : x
2. Step 2: Convert to fraction form
   61,196.18/91,720.46 = 31,597.87/x
3. Step 3: Cross multiply
   61,196.18x = 91,720.46 × 31,597.87
4. Step 4: Simplify right side
   61,196.18x = 2,898,171,171.42
5. Step 5: Solve for x
   x = 2,898,171,171.42/61,196.18
6. Step 6: Final answer
   x = 47,358.69