Finding the Fourth Proportional to 128,662,803.69, 177,556,040.42 and 69,925,471.89

Step by Step Solution

1. Step 1: Write the proportion equation
   128,662,803.69 : 177,556,040.42 = 69,925,471.89 : x
2. Step 2: Convert to fraction form
   128,662,803.69/177,556,040.42 = 69,925,471.89/x
3. Step 3: Cross multiply
   128,662,803.69x = 177,556,040.42 × 69,925,471.89
4. Step 4: Simplify right side
   128,662,803.69x = 12,415,689,913,288,412
5. Step 5: Solve for x
   x = 12,415,689,913,288,412/128,662,803.69
6. Step 6: Final answer
   x = 96,497,896.50