Finding the Fourth Proportional to 163,109.39, 225,075.83 and 91,475.57

Step by Step Solution

1. Step 1: Write the proportion equation
   163,109.39 : 225,075.83 = 91,475.57 : x
2. Step 2: Convert to fraction form
   163,109.39/225,075.83 = 91,475.57/x
3. Step 3: Cross multiply
   163,109.39x = 225,075.83 × 91,475.57
4. Step 4: Simplify right side
   163,109.39x = 20,588,938,259.72
5. Step 5: Solve for x
   x = 20,588,938,259.72/163,109.39
6. Step 6: Final answer
   x = 126,227.80