Finding the Fourth Proportional to 99,157.44, 148,577.59 and 89,086.30

Step by Step Solution

1. Step 1: Write the proportion equation
   99,157.44 : 148,577.59 = 89,086.30 : x
2. Step 2: Convert to fraction form
   99,157.44/148,577.59 = 89,086.30/x
3. Step 3: Cross multiply
   99,157.44x = 148,577.59 × 89,086.30
4. Step 4: Simplify right side
   99,157.44x = 13,236,227,756.02
5. Step 5: Solve for x
   x = 13,236,227,756.02/99,157.44
6. Step 6: Final answer
   x = 133,486.99