Finding the Fourth Proportional to 128,030.86, 176,611.69 and 89,847.39

Step by Step Solution

1. Step 1: Write the proportion equation
   128,030.86 : 176,611.69 = 89,847.39 : x
2. Step 2: Convert to fraction form
   128,030.86/176,611.69 = 89,847.39/x
3. Step 3: Cross multiply
   128,030.86x = 176,611.69 × 89,847.39
4. Step 4: Simplify right side
   128,030.86x = 15,868,100,164.59
5. Step 5: Solve for x
   x = 15,868,100,164.59/128,030.86
6. Step 6: Final answer
   x = 123,939.65