Finding the Fourth Proportional to 42,897.30, 64,324.01 and 17,930.53

Step by Step Solution

1. Step 1: Write the proportion equation
   42,897.30 : 64,324.01 = 17,930.53 : x
2. Step 2: Convert to fraction form
   42,897.30/64,324.01 = 17,930.53/x
3. Step 3: Cross multiply
   42,897.30x = 64,324.01 × 17,930.53
4. Step 4: Simplify right side
   42,897.30x = 1,153,363,501.37
5. Step 5: Solve for x
   x = 1,153,363,501.37/42,897.30
6. Step 6: Final answer
   x = 26,886.63