Finding the Fourth Proportional to 79,973.34, 120,032.55 and 42,564.90

Step by Step Solution

1. Step 1: Write the proportion equation
   79,973.34 : 120,032.55 = 42,564.90 : x
2. Step 2: Convert to fraction form
   79,973.34/120,032.55 = 42,564.90/x
3. Step 3: Cross multiply
   79,973.34x = 120,032.55 × 42,564.90
4. Step 4: Simplify right side
   79,973.34x = 5,109,173,937.62
5. Step 5: Solve for x
   x = 5,109,173,937.62/79,973.34
6. Step 6: Final answer
   x = 63,885.97