Finding the Fourth Proportional to 662,221,488.72, 913,893,853.32 and 368,865,978.96

Step by Step Solution

1. Step 1: Write the proportion equation
   662,221,488.72 : 913,893,853.32 = 368,865,978.96 : x
2. Step 2: Convert to fraction form
   662,221,488.72/913,893,853.32 = 368,865,978.96/x
3. Step 3: Cross multiply
   662,221,488.72x = 913,893,853.32 × 368,865,978.96
4. Step 4: Simplify right side
   662,221,488.72x = 337,104,350,870,408,448
5. Step 5: Solve for x
   x = 337,104,350,870,408,448/662,221,488.72
6. Step 6: Final answer
   x = 509,050,758.11