Finding the Fourth Proportional to 86,706.89, 130,066.71 and 36,781.32

Step by Step Solution

1. Step 1: Write the proportion equation
   86,706.89 : 130,066.71 = 36,781.32 : x
2. Step 2: Convert to fraction form
   86,706.89/130,066.71 = 36,781.32/x
3. Step 3: Cross multiply
   86,706.89x = 130,066.71 × 36,781.32
4. Step 4: Simplify right side
   86,706.89x = 4,784,025,281.86
5. Step 5: Solve for x
   x = 4,784,025,281.86/86,706.89
6. Step 6: Final answer
   x = 55,174.69