Finding the Fourth Proportional to 78,931.47, 108,927.57 and 47,118.84

Step by Step Solution

1. Step 1: Write the proportion equation
   78,931.47 : 108,927.57 = 47,118.84 : x
2. Step 2: Convert to fraction form
   78,931.47/108,927.57 = 47,118.84/x
3. Step 3: Cross multiply
   78,931.47x = 108,927.57 × 47,118.84
4. Step 4: Simplify right side
   78,931.47x = 5,132,540,742.42
5. Step 5: Solve for x
   x = 5,132,540,742.42/78,931.47
6. Step 6: Final answer
   x = 65,025.28