Finding the Fourth Proportional to 111,390,019.50, 167,119,237.56 and 53,171,986.62

Step by Step Solution

1. Step 1: Write the proportion equation
   111,390,019.50 : 167,119,237.56 = 53,171,986.62 : x
2. Step 2: Convert to fraction form
   111,390,019.50/167,119,237.56 = 53,171,986.62/x
3. Step 3: Cross multiply
   111,390,019.50x = 167,119,237.56 × 53,171,986.62
4. Step 4: Simplify right side
   111,390,019.50x = 8,886,061,863,484,921
5. Step 5: Solve for x
   x = 8,886,061,863,484,921/111,390,019.50
6. Step 6: Final answer
   x = 79,774,309.25