Finding the Fourth Proportional to 69,310.55, 103,978.69 and 21,937.57

Step by Step Solution

1. Step 1: Write the proportion equation
   69,310.55 : 103,978.69 = 21,937.57 : x
2. Step 2: Convert to fraction form
   69,310.55/103,978.69 = 21,937.57/x
3. Step 3: Cross multiply
   69,310.55x = 103,978.69 × 21,937.57
4. Step 4: Simplify right side
   69,310.55x = 2,281,039,475.59
5. Step 5: Solve for x
   x = 2,281,039,475.59/69,310.55
6. Step 6: Final answer
   x = 32,910.42