Finding the Fourth Proportional to 151,773, 209,431.77 and 83,785.56

Step by Step Solution

1. Step 1: Write the proportion equation
   151,773 : 209,431.77 = 83,785.56 : x
2. Step 2: Convert to fraction form
   151,773/209,431.77 = 83,785.56/x
3. Step 3: Cross multiply
   151,773x = 209,431.77 × 83,785.56
4. Step 4: Simplify right side
   151,773x = 17,547,358,131.24
5. Step 5: Solve for x
   x = 17,547,358,131.24/151,773
6. Step 6: Final answer
   x = 115,615.81