Finding the Fourth Proportional to 117,061.21, 161,614.07 and 76,845.32

Step by Step Solution

1. Step 1: Write the proportion equation
   117,061.21 : 161,614.07 = 76,845.32 : x
2. Step 2: Convert to fraction form
   117,061.21/161,614.07 = 76,845.32/x
3. Step 3: Cross multiply
   117,061.21x = 161,614.07 × 76,845.32
4. Step 4: Simplify right side
   117,061.21x = 12,419,284,925.65
5. Step 5: Solve for x
   x = 12,419,284,925.65/117,061.21
6. Step 6: Final answer
   x = 106,092.23