Finding the Fourth Proportional to 148,109.25, 204,390.90 and 81,041.25

Step by Step Solution

1. Step 1: Write the proportion equation
   148,109.25 : 204,390.90 = 81,041.25 : x
2. Step 2: Convert to fraction form
   148,109.25/204,390.90 = 81,041.25/x
3. Step 3: Cross multiply
   148,109.25x = 204,390.90 × 81,041.25
4. Step 4: Simplify right side
   148,109.25x = 16,564,094,024.63
5. Step 5: Solve for x
   x = 16,564,094,024.63/148,109.25
6. Step 6: Final answer
   x = 111,837.00