Finding the Fourth Proportional to 76,145.96, 105,082.82 and 42,611.88

Step by Step Solution

1. Step 1: Write the proportion equation
   76,145.96 : 105,082.82 = 42,611.88 : x
2. Step 2: Convert to fraction form
   76,145.96/105,082.82 = 42,611.88/x
3. Step 3: Cross multiply
   76,145.96x = 105,082.82 × 42,611.88
4. Step 4: Simplify right side
   76,145.96x = 4,477,776,515.90
5. Step 5: Solve for x
   x = 4,477,776,515.90/76,145.96
6. Step 6: Final answer
   x = 58,805.18