Finding the Fourth Proportional to 156,820.74, 235,231.30 and 42,969.52

Step by Step Solution

1. Step 1: Write the proportion equation
   156,820.74 : 235,231.30 = 42,969.52 : x
2. Step 2: Convert to fraction form
   156,820.74/235,231.30 = 42,969.52/x
3. Step 3: Cross multiply
   156,820.74x = 235,231.30 × 42,969.52
4. Step 4: Simplify right side
   156,820.74x = 10,107,776,049.98
5. Step 5: Solve for x
   x = 10,107,776,049.98/156,820.74
6. Step 6: Final answer
   x = 64,454.33