Finding the Fourth Proportional to 65,103,211.55, 89,916,996.49 and 42,875,560.28

Step by Step Solution

1. Step 1: Write the proportion equation
   65,103,211.55 : 89,916,996.49 = 42,875,560.28 : x
2. Step 2: Convert to fraction form
   65,103,211.55/89,916,996.49 = 42,875,560.28/x
3. Step 3: Cross multiply
   65,103,211.55x = 89,916,996.49 × 42,875,560.28
4. Step 4: Simplify right side
   65,103,211.55x = 3,855,241,603,321,147
5. Step 5: Solve for x
   x = 3,855,241,603,321,147/65,103,211.55
6. Step 6: Final answer
   x = 59,217,379.78