Finding the Fourth Proportional to 114,060.15, 171,138.83 and 78,980.67

Step by Step Solution

1. Step 1: Write the proportion equation
   114,060.15 : 171,138.83 = 78,980.67 : x
2. Step 2: Convert to fraction form
   114,060.15/171,138.83 = 78,980.67/x
3. Step 3: Cross multiply
   114,060.15x = 171,138.83 × 78,980.67
4. Step 4: Simplify right side
   114,060.15x = 13,516,659,061.51
5. Step 5: Solve for x
   x = 13,516,659,061.51/114,060.15
6. Step 6: Final answer
   x = 118,504.66