Finding the Fourth Proportional to 42,654.40, 59,638.40 and 42,654.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,654.40 : 59,638.40 = 42,654.40 : x
2. Step 2: Convert to fraction form
   42,654.40/59,638.40 = 42,654.40/x
3. Step 3: Cross multiply
   42,654.40x = 59,638.40 × 42,654.40
4. Step 4: Simplify right side
   42,654.40x = 2,543,840,168.96
5. Step 5: Solve for x
   x = 2,543,840,168.96/42,654.40
6. Step 6: Final answer
   x = 59,638.40