Finding the Fourth Proportional to 91,172.56, 125,820.50 and 50,886.12

Step by Step Solution

1. Step 1: Write the proportion equation
   91,172.56 : 125,820.50 = 50,886.12 : x
2. Step 2: Convert to fraction form
   91,172.56/125,820.50 = 50,886.12/x
3. Step 3: Cross multiply
   91,172.56x = 125,820.50 × 50,886.12
4. Step 4: Simplify right side
   91,172.56x = 6,402,517,061.46
5. Step 5: Solve for x
   x = 6,402,517,061.46/91,172.56
6. Step 6: Final answer
   x = 70,224.17