Finding the Fourth Proportional to 42,938.17, 64,414.14 and 13,362.84

Step by Step Solution

1. Step 1: Write the proportion equation
   42,938.17 : 64,414.14 = 13,362.84 : x
2. Step 2: Convert to fraction form
   42,938.17/64,414.14 = 13,362.84/x
3. Step 3: Cross multiply
   42,938.17x = 64,414.14 × 13,362.84
4. Step 4: Simplify right side
   42,938.17x = 860,755,796.45
5. Step 5: Solve for x
   x = 860,755,796.45/42,938.17
6. Step 6: Final answer
   x = 20,046.40