Finding the Fourth Proportional to 78,981.71, 118,484.87 and 47,384.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,981.71 : 118,484.87 = 47,384.34 : x
2. Step 2: Convert to fraction form
   78,981.71/118,484.87 = 47,384.34/x
3. Step 3: Cross multiply
   78,981.71x = 118,484.87 × 47,384.34
4. Step 4: Simplify right side
   78,981.71x = 5,614,327,128.01
5. Step 5: Solve for x
   x = 5,614,327,128.01/78,981.71
6. Step 6: Final answer
   x = 71,083.89