Finding the Fourth Proportional to 42,835.47, 64,268.58 and 19,141.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,835.47 : 64,268.58 = 19,141.04 : x
2. Step 2: Convert to fraction form
   42,835.47/64,268.58 = 19,141.04/x
3. Step 3: Cross multiply
   42,835.47x = 64,268.58 × 19,141.04
4. Step 4: Simplify right side
   42,835.47x = 1,230,167,139.18
5. Step 5: Solve for x
   x = 1,230,167,139.18/42,835.47
6. Step 6: Final answer
   x = 28,718.42