Finding the Fourth Proportional to 51,064.01, 76,564.78 and 21,068.95

Step by Step Solution

1. Step 1: Write the proportion equation
   51,064.01 : 76,564.78 = 21,068.95 : x
2. Step 2: Convert to fraction form
   51,064.01/76,564.78 = 21,068.95/x
3. Step 3: Cross multiply
   51,064.01x = 76,564.78 × 21,068.95
4. Step 4: Simplify right side
   51,064.01x = 1,613,139,521.58
5. Step 5: Solve for x
   x = 1,613,139,521.58/51,064.01
6. Step 6: Final answer
   x = 31,590.54