Finding the Fourth Proportional to 76,467.94, 105,522.12 and 42,478.60

Step by Step Solution

1. Step 1: Write the proportion equation
   76,467.94 : 105,522.12 = 42,478.60 : x
2. Step 2: Convert to fraction form
   76,467.94/105,522.12 = 42,478.60/x
3. Step 3: Cross multiply
   76,467.94x = 105,522.12 × 42,478.60
4. Step 4: Simplify right side
   76,467.94x = 4,482,431,926.63
5. Step 5: Solve for x
   x = 4,482,431,926.63/76,467.94
6. Step 6: Final answer
   x = 58,618.45