Finding the Fourth Proportional to 71,381.79, 107,035.83 and 31,384.80

Step by Step Solution

1. Step 1: Write the proportion equation
   71,381.79 : 107,035.83 = 31,384.80 : x
2. Step 2: Convert to fraction form
   71,381.79/107,035.83 = 31,384.80/x
3. Step 3: Cross multiply
   71,381.79x = 107,035.83 × 31,384.80
4. Step 4: Simplify right side
   71,381.79x = 3,359,298,117.38
5. Step 5: Solve for x
   x = 3,359,298,117.38/71,381.79
6. Step 6: Final answer
   x = 47,061.00