Finding the Fourth Proportional to 111,991,744.72, 154,460,994.42 and 72,846,021.79

Step by Step Solution

1. Step 1: Write the proportion equation
   111,991,744.72 : 154,460,994.42 = 72,846,021.79 : x
2. Step 2: Convert to fraction form
   111,991,744.72/154,460,994.42 = 72,846,021.79/x
3. Step 3: Cross multiply
   111,991,744.72x = 154,460,994.42 × 72,846,021.79
4. Step 4: Simplify right side
   111,991,744.72x = 11,251,868,965,224,388
5. Step 5: Solve for x
   x = 11,251,868,965,224,388/111,991,744.72
6. Step 6: Final answer
   x = 100,470,521.23