Finding the Fourth Proportional to 128,662,783.46, 177,556,012.43 and 69,925,451.61

Step by Step Solution

1. Step 1: Write the proportion equation
   128,662,783.46 : 177,556,012.43 = 69,925,451.61 : x
2. Step 2: Convert to fraction form
   128,662,783.46/177,556,012.43 = 69,925,451.61/x
3. Step 3: Cross multiply
   128,662,783.46x = 177,556,012.43 × 69,925,451.61
4. Step 4: Simplify right side
   128,662,783.46x = 12,415,684,355,238,524
5. Step 5: Solve for x
   x = 12,415,684,355,238,524/128,662,783.46
6. Step 6: Final answer
   x = 96,497,868.47