Finding the Fourth Proportional to 249,176.89, 373,814.56 and 91,406.71

Step by Step Solution

1. Step 1: Write the proportion equation
   249,176.89 : 373,814.56 = 91,406.71 : x
2. Step 2: Convert to fraction form
   249,176.89/373,814.56 = 91,406.71/x
3. Step 3: Cross multiply
   249,176.89x = 373,814.56 × 91,406.71
4. Step 4: Simplify right side
   249,176.89x = 34,169,157,210.62
5. Step 5: Solve for x
   x = 34,169,157,210.62/249,176.89
6. Step 6: Final answer
   x = 137,128.12