Finding the Fourth Proportional to 286,061.05, 429,094.82 and 86,383.09

Step by Step Solution

1. Step 1: Write the proportion equation
   286,061.05 : 429,094.82 = 86,383.09 : x
2. Step 2: Convert to fraction form
   286,061.05/429,094.82 = 86,383.09/x
3. Step 3: Cross multiply
   286,061.05x = 429,094.82 × 86,383.09
4. Step 4: Simplify right side
   286,061.05x = 37,066,536,454.59
5. Step 5: Solve for x
   x = 37,066,536,454.59/286,061.05
6. Step 6: Final answer
   x = 129,575.61