Finding the Fourth Proportional to 183,978.02, 275,736.18 and 78,673.16

Step by Step Solution

1. Step 1: Write the proportion equation
   183,978.02 : 275,736.18 = 78,673.16 : x
2. Step 2: Convert to fraction form
   183,978.02/275,736.18 = 78,673.16/x
3. Step 3: Cross multiply
   183,978.02x = 275,736.18 × 78,673.16
4. Step 4: Simplify right side
   183,978.02x = 21,693,036,606.93
5. Step 5: Solve for x
   x = 21,693,036,606.93/183,978.02
6. Step 6: Final answer
   x = 117,911.02