Finding the Fourth Proportional to 78,546.78, 116,931.84 and 78,079.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,546.78 : 116,931.84 = 78,079.76 : x
2. Step 2: Convert to fraction form
   78,546.78/116,931.84 = 78,079.76/x
3. Step 3: Cross multiply
   78,546.78x = 116,931.84 × 78,079.76
4. Step 4: Simplify right side
   78,546.78x = 9,130,010,003.56
5. Step 5: Solve for x
   x = 9,130,010,003.56/78,546.78
6. Step 6: Final answer
   x = 116,236.59