Finding the Fourth Proportional to 99,510, 137,321.83 and 54,188.52

Step by Step Solution

1. Step 1: Write the proportion equation
   99,510 : 137,321.83 = 54,188.52 : x
2. Step 2: Convert to fraction form
   99,510/137,321.83 = 54,188.52/x
3. Step 3: Cross multiply
   99,510x = 137,321.83 × 54,188.52
4. Step 4: Simplify right side
   99,510x = 7,441,266,731.39
5. Step 5: Solve for x
   x = 7,441,266,731.39/99,510
6. Step 6: Final answer
   x = 74,779.08