Finding the Fourth Proportional to 99,111.60, 148,550.76 and 49,176.72

Step by Step Solution

1. Step 1: Write the proportion equation
   99,111.60 : 148,550.76 = 49,176.72 : x
2. Step 2: Convert to fraction form
   99,111.60/148,550.76 = 49,176.72/x
3. Step 3: Cross multiply
   99,111.60x = 148,550.76 × 49,176.72
4. Step 4: Simplify right side
   99,111.60x = 7,305,239,130.31
5. Step 5: Solve for x
   x = 7,305,239,130.31/99,111.60
6. Step 6: Final answer
   x = 73,707.21