Finding the Fourth Proportional to 128,662,758.56, 177,555,978.16 and 69,925,426.76

Step by Step Solution

1. Step 1: Write the proportion equation
   128,662,758.56 : 177,555,978.16 = 69,925,426.76 : x
2. Step 2: Convert to fraction form
   128,662,758.56/177,555,978.16 = 69,925,426.76/x
3. Step 3: Cross multiply
   128,662,758.56x = 177,555,978.16 × 69,925,426.76
4. Step 4: Simplify right side
   128,662,758.56x = 12,415,677,546,627,240
5. Step 5: Solve for x
   x = 12,415,677,546,627,240/128,662,758.56
6. Step 6: Final answer
   x = 96,497,834.23