Finding the Fourth Proportional to 389,820,910.86, 584,732,363.13 and 98,688,064.77

Step by Step Solution

1. Step 1: Write the proportion equation
   389,820,910.86 : 584,732,363.13 = 98,688,064.77 : x
2. Step 2: Convert to fraction form
   389,820,910.86/584,732,363.13 = 98,688,064.77/x
3. Step 3: Cross multiply
   389,820,910.86x = 584,732,363.13 × 98,688,064.77
4. Step 4: Simplify right side
   389,820,910.86x = 57,706,105,325,688,600
5. Step 5: Solve for x
   x = 57,706,105,325,688,600/389,820,910.86
6. Step 6: Final answer
   x = 148,032,349.52