Finding the Fourth Proportional to 55,638,568.30, 83,398,949.25 and 18,715,307.98

Step by Step Solution

1. Step 1: Write the proportion equation
   55,638,568.30 : 83,398,949.25 = 18,715,307.98 : x
2. Step 2: Convert to fraction form
   55,638,568.30/83,398,949.25 = 18,715,307.98/x
3. Step 3: Cross multiply
   55,638,568.30x = 83,398,949.25 × 18,715,307.98
4. Step 4: Simplify right side
   55,638,568.30x = 1,560,837,020,422,140
5. Step 5: Solve for x
   x = 1,560,837,020,422,140/55,638,568.30
6. Step 6: Final answer
   x = 28,053,148.53