Finding the Fourth Proportional to 77,987.04, 107,621.72 and 42,176.96

Step by Step Solution

1. Step 1: Write the proportion equation
   77,987.04 : 107,621.72 = 42,176.96 : x
2. Step 2: Convert to fraction form
   77,987.04/107,621.72 = 42,176.96/x
3. Step 3: Cross multiply
   77,987.04x = 107,621.72 × 42,176.96
4. Step 4: Simplify right side
   77,987.04x = 4,539,156,979.57
5. Step 5: Solve for x
   x = 4,539,156,979.57/77,987.04
6. Step 6: Final answer
   x = 58,203.99