Finding the Fourth Proportional to 42,935.07, 64,390.98 and 17,970

Step by Step Solution

1. Step 1: Write the proportion equation
   42,935.07 : 64,390.98 = 17,970 : x
2. Step 2: Convert to fraction form
   42,935.07/64,390.98 = 17,970/x
3. Step 3: Cross multiply
   42,935.07x = 64,390.98 × 17,970
4. Step 4: Simplify right side
   42,935.07x = 1,157,105,910.60
5. Step 5: Solve for x
   x = 1,157,105,910.60/42,935.07
6. Step 6: Final answer
   x = 26,950.13