Finding the Fourth Proportional to 148,839, 205,397.90 and 81,775.32

Step by Step Solution

1. Step 1: Write the proportion equation
   148,839 : 205,397.90 = 81,775.32 : x
2. Step 2: Convert to fraction form
   148,839/205,397.90 = 81,775.32/x
3. Step 3: Cross multiply
   148,839x = 205,397.90 × 81,775.32
4. Step 4: Simplify right side
   148,839x = 16,796,478,999.83
5. Step 5: Solve for x
   x = 16,796,478,999.83/148,839
6. Step 6: Final answer
   x = 112,849.99