Finding the Fourth Proportional to 42,807, 64,220.22 and 23,085.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,807 : 64,220.22 = 23,085.12 : x
2. Step 2: Convert to fraction form
   42,807/64,220.22 = 23,085.12/x
3. Step 3: Cross multiply
   42,807x = 64,220.22 × 23,085.12
4. Step 4: Simplify right side
   42,807x = 1,482,531,485.13
5. Step 5: Solve for x
   x = 1,482,531,485.13/42,807
6. Step 6: Final answer
   x = 34,632.92