Finding the Fourth Proportional to 142,003,089,030.94, 195,970,422,854.39 and 78,638,315,718.94

Step by Step Solution

1. Step 1: Write the proportion equation
   142,003,089,030.94 : 195,970,422,854.39 = 78,638,315,718.94 : x
2. Step 2: Convert to fraction form
   142,003,089,030.94/195,970,422,854.39 = 78,638,315,718.94/x
3. Step 3: Cross multiply
   142,003,089,030.94x = 195,970,422,854.39 × 78,638,315,718.94
4. Step 4: Simplify right side
   142,003,089,030.94x = 15,410,783,983,997,697,392,640
5. Step 5: Solve for x
   x = 15,410,783,983,997,697,392,640/142,003,089,030.94
6. Step 6: Final answer
   x = 108,524,286,965.62