Finding the Fourth Proportional to 103,406.06, 155,240.34 and 87,922.10

Step by Step Solution

1. Step 1: Write the proportion equation
   103,406.06 : 155,240.34 = 87,922.10 : x
2. Step 2: Convert to fraction form
   103,406.06/155,240.34 = 87,922.10/x
3. Step 3: Cross multiply
   103,406.06x = 155,240.34 × 87,922.10
4. Step 4: Simplify right side
   103,406.06x = 13,649,056,697.51
5. Step 5: Solve for x
   x = 13,649,056,697.51/103,406.06
6. Step 6: Final answer
   x = 131,994.75