Finding the Fourth Proportional to 101,499.20, 152,253.12 and 31,379.84

Step by Step Solution

1. Step 1: Write the proportion equation
   101,499.20 : 152,253.12 = 31,379.84 : x
2. Step 2: Convert to fraction form
   101,499.20/152,253.12 = 31,379.84/x
3. Step 3: Cross multiply
   101,499.20x = 152,253.12 × 31,379.84
4. Step 4: Simplify right side
   101,499.20x = 4,777,678,545.10
5. Step 5: Solve for x
   x = 4,777,678,545.10/101,499.20
6. Step 6: Final answer
   x = 47,071.10