Finding the Fourth Proportional to 42,937.52, 64,445.57 and 21,892.65

Step by Step Solution

1. Step 1: Write the proportion equation
   42,937.52 : 64,445.57 = 21,892.65 : x
2. Step 2: Convert to fraction form
   42,937.52/64,445.57 = 21,892.65/x
3. Step 3: Cross multiply
   42,937.52x = 64,445.57 × 21,892.65
4. Step 4: Simplify right side
   42,937.52x = 1,410,884,308.06
5. Step 5: Solve for x
   x = 1,410,884,308.06/42,937.52
6. Step 6: Final answer
   x = 32,859.01