Finding the Fourth Proportional to 42,090.46, 63,134.15 and 12,507.52

Step by Step Solution

1. Step 1: Write the proportion equation
   42,090.46 : 63,134.15 = 12,507.52 : x
2. Step 2: Convert to fraction form
   42,090.46/63,134.15 = 12,507.52/x
3. Step 3: Cross multiply
   42,090.46x = 63,134.15 × 12,507.52
4. Step 4: Simplify right side
   42,090.46x = 789,651,770.37
5. Step 5: Solve for x
   x = 789,651,770.37/42,090.46
6. Step 6: Final answer
   x = 18,760.83