Finding the Fourth Proportional to 85,682,383.41, 128,527,708.55 and 28,173,381.33

Step by Step Solution

1. Step 1: Write the proportion equation
   85,682,383.41 : 128,527,708.55 = 28,173,381.33 : x
2. Step 2: Convert to fraction form
   85,682,383.41/128,527,708.55 = 28,173,381.33/x
3. Step 3: Cross multiply
   85,682,383.41x = 128,527,708.55 × 28,173,381.33
4. Step 4: Simplify right side
   85,682,383.41x = 3,621,060,144,309,384.50
5. Step 5: Solve for x
   x = 3,621,060,144,309,384.50/85,682,383.41
6. Step 6: Final answer
   x = 42,261,431.12