Finding the Fourth Proportional to 78,782.42, 108,720.08 and 42,973.20

Step by Step Solution

1. Step 1: Write the proportion equation
   78,782.42 : 108,720.08 = 42,973.20 : x
2. Step 2: Convert to fraction form
   78,782.42/108,720.08 = 42,973.20/x
3. Step 3: Cross multiply
   78,782.42x = 108,720.08 × 42,973.20
4. Step 4: Simplify right side
   78,782.42x = 4,672,049,741.86
5. Step 5: Solve for x
   x = 4,672,049,741.86/78,782.42
6. Step 6: Final answer
   x = 59,303.20