Finding the Fourth Proportional to 83,701.30, 115,527.72 and 47,912

Step by Step Solution

1. Step 1: Write the proportion equation
   83,701.30 : 115,527.72 = 47,912 : x
2. Step 2: Convert to fraction form
   83,701.30/115,527.72 = 47,912/x
3. Step 3: Cross multiply
   83,701.30x = 115,527.72 × 47,912
4. Step 4: Simplify right side
   83,701.30x = 5,535,164,120.64
5. Step 5: Solve for x
   x = 5,535,164,120.64/83,701.30
6. Step 6: Final answer
   x = 66,129.97