Finding the Fourth Proportional to 92,902,789.32, 128,016,783.18 and 71,867,042.52

Step by Step Solution

1. Step 1: Write the proportion equation
   92,902,789.32 : 128,016,783.18 = 71,867,042.52 : x
2. Step 2: Convert to fraction form
   92,902,789.32/128,016,783.18 = 71,867,042.52/x
3. Step 3: Cross multiply
   92,902,789.32x = 128,016,783.18 × 71,867,042.52
4. Step 4: Simplify right side
   92,902,789.32x = 9,200,187,600,070,680
5. Step 5: Solve for x
   x = 9,200,187,600,070,680/92,902,789.32
6. Step 6: Final answer
   x = 99,030,262.36