Finding the Fourth Proportional to 105,567.04, 157,557.70 and 91,272.28

Step by Step Solution

1. Step 1: Write the proportion equation
   105,567.04 : 157,557.70 = 91,272.28 : x
2. Step 2: Convert to fraction form
   105,567.04/157,557.70 = 91,272.28/x
3. Step 3: Cross multiply
   105,567.04x = 157,557.70 × 91,272.28
4. Step 4: Simplify right side
   105,567.04x = 14,380,650,510.56
5. Step 5: Solve for x
   x = 14,380,650,510.56/105,567.04
6. Step 6: Final answer
   x = 136,222.92