Finding the Fourth Proportional to 45,780.83, 68,672.15 and 30,085.91

Step by Step Solution

1. Step 1: Write the proportion equation
   45,780.83 : 68,672.15 = 30,085.91 : x
2. Step 2: Convert to fraction form
   45,780.83/68,672.15 = 30,085.91/x
3. Step 3: Cross multiply
   45,780.83x = 68,672.15 × 30,085.91
4. Step 4: Simplify right side
   45,780.83x = 2,066,064,556.47
5. Step 5: Solve for x
   x = 2,066,064,556.47/45,780.83
6. Step 6: Final answer
   x = 45,129.47