Finding the Fourth Proportional to 72,774,859.18, 108,605,320.46 and 65,011,315.81

Step by Step Solution

1. Step 1: Write the proportion equation
   72,774,859.18 : 108,605,320.46 = 65,011,315.81 : x
2. Step 2: Convert to fraction form
   72,774,859.18/108,605,320.46 = 65,011,315.81/x
3. Step 3: Cross multiply
   72,774,859.18x = 108,605,320.46 × 65,011,315.81
4. Step 4: Simplify right side
   72,774,859.18x = 7,060,574,787,501,811
5. Step 5: Solve for x
   x = 7,060,574,787,501,811/72,774,859.18
6. Step 6: Final answer
   x = 97,019,422.19