Finding the Fourth Proportional to 114,761.90, 172,142.50 and 30,521.99

Step by Step Solution

1. Step 1: Write the proportion equation
   114,761.90 : 172,142.50 = 30,521.99 : x
2. Step 2: Convert to fraction form
   114,761.90/172,142.50 = 30,521.99/x
3. Step 3: Cross multiply
   114,761.90x = 172,142.50 × 30,521.99
4. Step 4: Simplify right side
   114,761.90x = 5,254,131,663.58
5. Step 5: Solve for x
   x = 5,254,131,663.58/114,761.90
6. Step 6: Final answer
   x = 45,782.89