Finding the Fourth Proportional to 77,892.42, 107,491.40 and 42,082.32

Step by Step Solution

1. Step 1: Write the proportion equation
   77,892.42 : 107,491.40 = 42,082.32 : x
2. Step 2: Convert to fraction form
   77,892.42/107,491.40 = 42,082.32/x
3. Step 3: Cross multiply
   77,892.42x = 107,491.40 × 42,082.32
4. Step 4: Simplify right side
   77,892.42x = 4,523,487,281.64
5. Step 5: Solve for x
   x = 4,523,487,281.64/77,892.42
6. Step 6: Final answer
   x = 58,073.52