Finding the Fourth Proportional to 61,196.60, 91,811.10 and 21,749.60

Step by Step Solution

1. Step 1: Write the proportion equation
   61,196.60 : 91,811.10 = 21,749.60 : x
2. Step 2: Convert to fraction form
   61,196.60/91,811.10 = 21,749.60/x
3. Step 3: Cross multiply
   61,196.60x = 91,811.10 × 21,749.60
4. Step 4: Simplify right side
   61,196.60x = 1,996,854,700.56
5. Step 5: Solve for x
   x = 1,996,854,700.56/61,196.60
6. Step 6: Final answer
   x = 32,630.16