Finding the Fourth Proportional to 389,788,589.05, 584,756,624.18 and 156,637,450.69

Step by Step Solution

1. Step 1: Write the proportion equation
   389,788,589.05 : 584,756,624.18 = 156,637,450.69 : x
2. Step 2: Convert to fraction form
   389,788,589.05/584,756,624.18 = 156,637,450.69/x
3. Step 3: Cross multiply
   389,788,589.05x = 584,756,624.18 × 156,637,450.69
4. Step 4: Simplify right side
   389,788,589.05x = 91,594,786,885,645,600
5. Step 5: Solve for x
   x = 91,594,786,885,645,600/389,788,589.05
6. Step 6: Final answer
   x = 234,985,808.87