Finding the Fourth Proportional to 249,557, 374,110.86 and 91,751.72

Step by Step Solution

1. Step 1: Write the proportion equation
   249,557 : 374,110.86 = 91,751.72 : x
2. Step 2: Convert to fraction form
   249,557/374,110.86 = 91,751.72/x
3. Step 3: Cross multiply
   249,557x = 374,110.86 × 91,751.72
4. Step 4: Simplify right side
   249,557x = 34,325,314,875.68
5. Step 5: Solve for x
   x = 34,325,314,875.68/249,557
6. Step 6: Final answer
   x = 137,544.99