Finding the Fourth Proportional to 61,165.35, 91,706.72 and 21,174.03

Step by Step Solution

1. Step 1: Write the proportion equation
   61,165.35 : 91,706.72 = 21,174.03 : x
2. Step 2: Convert to fraction form
   61,165.35/91,706.72 = 21,174.03/x
3. Step 3: Cross multiply
   61,165.35x = 91,706.72 × 21,174.03
4. Step 4: Simplify right side
   61,165.35x = 1,941,800,734.61
5. Step 5: Solve for x
   x = 1,941,800,734.61/61,165.35
6. Step 6: Final answer
   x = 31,746.74