Finding the Fourth Proportional to 259,059.93, 388,642.28 and 109,300.59

Step by Step Solution

1. Step 1: Write the proportion equation
   259,059.93 : 388,642.28 = 109,300.59 : x
2. Step 2: Convert to fraction form
   259,059.93/388,642.28 = 109,300.59/x
3. Step 3: Cross multiply
   259,059.93x = 388,642.28 × 109,300.59
4. Step 4: Simplify right side
   259,059.93x = 42,478,830,502.95
5. Step 5: Solve for x
   x = 42,478,830,502.95/259,059.93
6. Step 6: Final answer
   x = 163,972.99