Finding the Fourth Proportional to 117,111.21, 175,630.50 and 42,221.67

Step by Step Solution

1. Step 1: Write the proportion equation
   117,111.21 : 175,630.50 = 42,221.67 : x
2. Step 2: Convert to fraction form
   117,111.21/175,630.50 = 42,221.67/x
3. Step 3: Cross multiply
   117,111.21x = 175,630.50 × 42,221.67
4. Step 4: Simplify right side
   117,111.21x = 7,415,413,012.94
5. Step 5: Solve for x
   x = 7,415,413,012.94/117,111.21
6. Step 6: Final answer
   x = 63,319.41