Finding the Fourth Proportional to 281,760,040.29, 422,643,314.34 and 85,025,158.05

Step by Step Solution

1. Step 1: Write the proportion equation
   281,760,040.29 : 422,643,314.34 = 85,025,158.05 : x
2. Step 2: Convert to fraction form
   281,760,040.29/422,643,314.34 = 85,025,158.05/x
3. Step 3: Cross multiply
   281,760,040.29x = 422,643,314.34 × 85,025,158.05
4. Step 4: Simplify right side
   281,760,040.29x = 35,935,314,600,534,328
5. Step 5: Solve for x
   x = 35,935,314,600,534,328/281,760,040.29
6. Step 6: Final answer
   x = 127,538,718.99