Finding the Fourth Proportional to 115,419.63, 159,274.91 and 72,422.30

Step by Step Solution

1. Step 1: Write the proportion equation
   115,419.63 : 159,274.91 = 72,422.30 : x
2. Step 2: Convert to fraction form
   115,419.63/159,274.91 = 72,422.30/x
3. Step 3: Cross multiply
   115,419.63x = 159,274.91 × 72,422.30
4. Step 4: Simplify right side
   115,419.63x = 11,535,054,156.01
5. Step 5: Solve for x
   x = 11,535,054,156.01/115,419.63
6. Step 6: Final answer
   x = 99,940.14