Finding the Fourth Proportional to 42,355.08, 63,567.60 and 21,301.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,355.08 : 63,567.60 = 21,301.12 : x
2. Step 2: Convert to fraction form
   42,355.08/63,567.60 = 21,301.12/x
3. Step 3: Cross multiply
   42,355.08x = 63,567.60 × 21,301.12
4. Step 4: Simplify right side
   42,355.08x = 1,354,061,075.71
5. Step 5: Solve for x
   x = 1,354,061,075.71/42,355.08
6. Step 6: Final answer
   x = 31,969.27