Finding the Fourth Proportional to 68,978.59, 103,454.82 and 21,586.53

Step by Step Solution

1. Step 1: Write the proportion equation
   68,978.59 : 103,454.82 = 21,586.53 : x
2. Step 2: Convert to fraction form
   68,978.59/103,454.82 = 21,586.53/x
3. Step 3: Cross multiply
   68,978.59x = 103,454.82 × 21,586.53
4. Step 4: Simplify right side
   68,978.59x = 2,233,230,090.63
5. Step 5: Solve for x
   x = 2,233,230,090.63/68,978.59
6. Step 6: Final answer
   x = 32,375.70