Finding the Fourth Proportional to 28,471,667.50, 42,775,633.32 and 18,256,540.96

Step by Step Solution

1. Step 1: Write the proportion equation
   28,471,667.50 : 42,775,633.32 = 18,256,540.96 : x
2. Step 2: Convert to fraction form
   28,471,667.50/42,775,633.32 = 18,256,540.96/x
3. Step 3: Cross multiply
   28,471,667.50x = 42,775,633.32 × 18,256,540.96
4. Step 4: Simplify right side
   28,471,667.50x = 780,935,101,796,520.88
5. Step 5: Solve for x
   x = 780,935,101,796,520.88/28,471,667.50
6. Step 6: Final answer
   x = 27,428,498.94