Finding the Fourth Proportional to 118,430.72, 177,659.40 and 39,550.40

Step by Step Solution

1. Step 1: Write the proportion equation
   118,430.72 : 177,659.40 = 39,550.40 : x
2. Step 2: Convert to fraction form
   118,430.72/177,659.40 = 39,550.40/x
3. Step 3: Cross multiply
   118,430.72x = 177,659.40 × 39,550.40
4. Step 4: Simplify right side
   118,430.72x = 7,026,500,333.76
5. Step 5: Solve for x
   x = 7,026,500,333.76/118,430.72
6. Step 6: Final answer
   x = 59,330.05