Finding the Fourth Proportional to 131,782.72, 181,885.98 and 103,045.60

Step by Step Solution

1. Step 1: Write the proportion equation
   131,782.72 : 181,885.98 = 103,045.60 : x
2. Step 2: Convert to fraction form
   131,782.72/181,885.98 = 103,045.60/x
3. Step 3: Cross multiply
   131,782.72x = 181,885.98 × 103,045.60
4. Step 4: Simplify right side
   131,782.72x = 18,742,549,940.69
5. Step 5: Solve for x
   x = 18,742,549,940.69/131,782.72
6. Step 6: Final answer
   x = 142,223.12