Finding the Fourth Proportional to 67,384.21, 100,910.23 and 42,362.20

Step by Step Solution

1. Step 1: Write the proportion equation
   67,384.21 : 100,910.23 = 42,362.20 : x
2. Step 2: Convert to fraction form
   67,384.21/100,910.23 = 42,362.20/x
3. Step 3: Cross multiply
   67,384.21x = 100,910.23 × 42,362.20
4. Step 4: Simplify right side
   67,384.21x = 4,274,779,345.31
5. Step 5: Solve for x
   x = 4,274,779,345.31/67,384.21
6. Step 6: Final answer
   x = 63,438.89