Finding the Fourth Proportional to 42,810.63, 64,242.68 and 30,804

Step by Step Solution

1. Step 1: Write the proportion equation
   42,810.63 : 64,242.68 = 30,804 : x
2. Step 2: Convert to fraction form
   42,810.63/64,242.68 = 30,804/x
3. Step 3: Cross multiply
   42,810.63x = 64,242.68 × 30,804
4. Step 4: Simplify right side
   42,810.63x = 1,978,931,360.70
5. Step 5: Solve for x
   x = 1,978,931,360.70/42,810.63
6. Step 6: Final answer
   x = 46,225.23