Finding the Fourth Proportional to 128,697,100.08, 177,600,736.37 and 69,956,270.25

Step by Step Solution

1. Step 1: Write the proportion equation
   128,697,100.08 : 177,600,736.37 = 69,956,270.25 : x
2. Step 2: Convert to fraction form
   128,697,100.08/177,600,736.37 = 69,956,270.25/x
3. Step 3: Cross multiply
   128,697,100.08x = 177,600,736.37 × 69,956,270.25
4. Step 4: Simplify right side
   128,697,100.08x = 12,424,285,109,748,944
5. Step 5: Solve for x
   x = 12,424,285,109,748,944/128,697,100.08
6. Step 6: Final answer
   x = 96,538,967.09