Finding the Fourth Proportional to 102,900.89, 154,238.73 and 52,983.98

Step by Step Solution

1. Step 1: Write the proportion equation
   102,900.89 : 154,238.73 = 52,983.98 : x
2. Step 2: Convert to fraction form
   102,900.89/154,238.73 = 52,983.98/x
3. Step 3: Cross multiply
   102,900.89x = 154,238.73 × 52,983.98
4. Step 4: Simplify right side
   102,900.89x = 8,172,181,785.55
5. Step 5: Solve for x
   x = 8,172,181,785.55/102,900.89
6. Step 6: Final answer
   x = 79,417.99