Finding the Fourth Proportional to 146,300.20, 219,303.42 and 99,575.08

Step by Step Solution

1. Step 1: Write the proportion equation
   146,300.20 : 219,303.42 = 99,575.08 : x
2. Step 2: Convert to fraction form
   146,300.20/219,303.42 = 99,575.08/x
3. Step 3: Cross multiply
   146,300.20x = 219,303.42 × 99,575.08
4. Step 4: Simplify right side
   146,300.20x = 21,837,155,590.77
5. Step 5: Solve for x
   x = 21,837,155,590.77/146,300.20
6. Step 6: Final answer
   x = 149,262.65