Finding the Fourth Proportional to 122,969.60, 184,336.32 and 78,470.72

Step by Step Solution

1. Step 1: Write the proportion equation
   122,969.60 : 184,336.32 = 78,470.72 : x
2. Step 2: Convert to fraction form
   122,969.60/184,336.32 = 78,470.72/x
3. Step 3: Cross multiply
   122,969.60x = 184,336.32 × 78,470.72
4. Step 4: Simplify right side
   122,969.60x = 14,465,003,752.55
5. Step 5: Solve for x
   x = 14,465,003,752.55/122,969.60
6. Step 6: Final answer
   x = 117,630.73