Finding the Fourth Proportional to 151,824.78, 209,515.82 and 83,840.06

Step by Step Solution

1. Step 1: Write the proportion equation
   151,824.78 : 209,515.82 = 83,840.06 : x
2. Step 2: Convert to fraction form
   151,824.78/209,515.82 = 83,840.06/x
3. Step 3: Cross multiply
   151,824.78x = 209,515.82 × 83,840.06
4. Step 4: Simplify right side
   151,824.78x = 17,565,819,024.34
5. Step 5: Solve for x
   x = 17,565,819,024.34/151,824.78
6. Step 6: Final answer
   x = 115,697.97