Finding the Fourth Proportional to 99,036.15, 148,499.55 and 39,804.90

Step by Step Solution

1. Step 1: Write the proportion equation
   99,036.15 : 148,499.55 = 39,804.90 : x
2. Step 2: Convert to fraction form
   99,036.15/148,499.55 = 39,804.90/x
3. Step 3: Cross multiply
   99,036.15x = 148,499.55 × 39,804.90
4. Step 4: Simplify right side
   99,036.15x = 5,911,009,737.80
5. Step 5: Solve for x
   x = 5,911,009,737.80/99,036.15
6. Step 6: Final answer
   x = 59,685.37