Finding the Fourth Proportional to 69,279,404.58, 103,847,354.55 and 57,020,058.18

Step by Step Solution

1. Step 1: Write the proportion equation
   69,279,404.58 : 103,847,354.55 = 57,020,058.18 : x
2. Step 2: Convert to fraction form
   69,279,404.58/103,847,354.55 = 57,020,058.18/x
3. Step 3: Cross multiply
   69,279,404.58x = 103,847,354.55 × 57,020,058.18
4. Step 4: Simplify right side
   69,279,404.58x = 5,921,382,198,280,088
5. Step 5: Solve for x
   x = 5,921,382,198,280,088/69,279,404.58
6. Step 6: Final answer
   x = 85,471,031.89