Finding the Fourth Proportional to 42,945.02, 64,419.55 and 35,434.65

Step by Step Solution

1. Step 1: Write the proportion equation
   42,945.02 : 64,419.55 = 35,434.65 : x
2. Step 2: Convert to fraction form
   42,945.02/64,419.55 = 35,434.65/x
3. Step 3: Cross multiply
   42,945.02x = 64,419.55 × 35,434.65
4. Step 4: Simplify right side
   42,945.02x = 2,282,683,885.31
5. Step 5: Solve for x
   x = 2,282,683,885.31/42,945.02
6. Step 6: Final answer
   x = 53,153.63