Finding the Fourth Proportional to 42,362.40, 63,531.45 and 12,773.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,362.40 : 63,531.45 = 12,773.10 : x
2. Step 2: Convert to fraction form
   42,362.40/63,531.45 = 12,773.10/x
3. Step 3: Cross multiply
   42,362.40x = 63,531.45 × 12,773.10
4. Step 4: Simplify right side
   42,362.40x = 811,493,564.00
5. Step 5: Solve for x
   x = 811,493,564.00/42,362.40
6. Step 6: Final answer
   x = 19,155.99