Finding the Fourth Proportional to 78,801.61, 108,746.25 and 50,507.30

Step by Step Solution

1. Step 1: Write the proportion equation
   78,801.61 : 108,746.25 = 50,507.30 : x
2. Step 2: Convert to fraction form
   78,801.61/108,746.25 = 50,507.30/x
3. Step 3: Cross multiply
   78,801.61x = 108,746.25 × 50,507.30
4. Step 4: Simplify right side
   78,801.61x = 5,492,478,943.39
5. Step 5: Solve for x
   x = 5,492,478,943.39/78,801.61
6. Step 6: Final answer
   x = 69,700.09