Finding the Fourth Proportional to 109,429.34, 151,012.53 and 59,128.34

Step by Step Solution

1. Step 1: Write the proportion equation
   109,429.34 : 151,012.53 = 59,128.34 : x
2. Step 2: Convert to fraction form
   109,429.34/151,012.53 = 59,128.34/x
3. Step 3: Cross multiply
   109,429.34x = 151,012.53 × 59,128.34
4. Step 4: Simplify right side
   109,429.34x = 8,929,120,218.10
5. Step 5: Solve for x
   x = 8,929,120,218.10/109,429.34
6. Step 6: Final answer
   x = 81,597.13