Finding the Fourth Proportional to 99,030.32, 136,714.94 and 76,486

Step by Step Solution

1. Step 1: Write the proportion equation
   99,030.32 : 136,714.94 = 76,486 : x
2. Step 2: Convert to fraction form
   99,030.32/136,714.94 = 76,486/x
3. Step 3: Cross multiply
   99,030.32x = 136,714.94 × 76,486
4. Step 4: Simplify right side
   99,030.32x = 10,456,778,900.84
5. Step 5: Solve for x
   x = 10,456,778,900.84/99,030.32
6. Step 6: Final answer
   x = 105,591.69