Finding the Fourth Proportional to 186,081.51, 256,683.16 and 117,061.21

Step by Step Solution

1. Step 1: Write the proportion equation
   186,081.51 : 256,683.16 = 117,061.21 : x
2. Step 2: Convert to fraction form
   186,081.51/256,683.16 = 117,061.21/x
3. Step 3: Cross multiply
   186,081.51x = 256,683.16 × 117,061.21
4. Step 4: Simplify right side
   186,081.51x = 30,047,641,763.40
5. Step 5: Solve for x
   x = 30,047,641,763.40/186,081.51
6. Step 6: Final answer
   x = 161,475.70