Finding the Fourth Proportional to 155,031.86, 213,918.21 and 91,361.00

Step by Step Solution

1. Step 1: Write the proportion equation
   155,031.86 : 213,918.21 = 91,361.00 : x
2. Step 2: Convert to fraction form
   155,031.86/213,918.21 = 91,361.00/x
3. Step 3: Cross multiply
   155,031.86x = 213,918.21 × 91,361.00
4. Step 4: Simplify right side
   155,031.86x = 19,543,780,514.22
5. Step 5: Solve for x
   x = 19,543,780,514.22/155,031.86
6. Step 6: Final answer
   x = 126,063.00