Finding the Fourth Proportional to 72,961.79, 109,109.16 and 53,038.22

Step by Step Solution

1. Step 1: Write the proportion equation
   72,961.79 : 109,109.16 = 53,038.22 : x
2. Step 2: Convert to fraction form
   72,961.79/109,109.16 = 53,038.22/x
3. Step 3: Cross multiply
   72,961.79x = 109,109.16 × 53,038.22
4. Step 4: Simplify right side
   72,961.79x = 5,786,955,086.55
5. Step 5: Solve for x
   x = 5,786,955,086.55/72,961.79
6. Step 6: Final answer
   x = 79,314.88