Finding the Fourth Proportional to 102,191.82, 153,310.79 and 31,120.82

Step by Step Solution

1. Step 1: Write the proportion equation
   102,191.82 : 153,310.79 = 31,120.82 : x
2. Step 2: Convert to fraction form
   102,191.82/153,310.79 = 31,120.82/x
3. Step 3: Cross multiply
   102,191.82x = 153,310.79 × 31,120.82
4. Step 4: Simplify right side
   102,191.82x = 4,771,157,499.65
5. Step 5: Solve for x
   x = 4,771,157,499.65/102,191.82
6. Step 6: Final answer
   x = 46,688.25