Finding the Fourth Proportional to 76,532.72, 105,607.90 and 42,537.17

Step by Step Solution

1. Step 1: Write the proportion equation
   76,532.72 : 105,607.90 = 42,537.17 : x
2. Step 2: Convert to fraction form
   76,532.72/105,607.90 = 42,537.17/x
3. Step 3: Cross multiply
   76,532.72x = 105,607.90 × 42,537.17
4. Step 4: Simplify right side
   76,532.72x = 4,492,260,931.62
5. Step 5: Solve for x
   x = 4,492,260,931.62/76,532.72
6. Step 6: Final answer
   x = 58,697.26