Finding the Fourth Proportional to 379,788.20, 569,714.82 and 99,305

Step by Step Solution

1. Step 1: Write the proportion equation
   379,788.20 : 569,714.82 = 99,305 : x
2. Step 2: Convert to fraction form
   379,788.20/569,714.82 = 99,305/x
3. Step 3: Cross multiply
   379,788.20x = 569,714.82 × 99,305
4. Step 4: Simplify right side
   379,788.20x = 56,575,530,200.10
5. Step 5: Solve for x
   x = 56,575,530,200.10/379,788.20
6. Step 6: Final answer
   x = 148,966.00