Finding the Fourth Proportional to 42,941.04, 64,434.08 and 31,191.89

Step by Step Solution

1. Step 1: Write the proportion equation
   42,941.04 : 64,434.08 = 31,191.89 : x
2. Step 2: Convert to fraction form
   42,941.04/64,434.08 = 31,191.89/x
3. Step 3: Cross multiply
   42,941.04x = 64,434.08 × 31,191.89
4. Step 4: Simplify right side
   42,941.04x = 2,009,820,491.42
5. Step 5: Solve for x
   x = 2,009,820,491.42/42,941.04
6. Step 6: Final answer
   x = 46,804.19