Finding the Fourth Proportional to 156,641.78, 235,002.72 and 51,461.66

Step by Step Solution

1. Step 1: Write the proportion equation
   156,641.78 : 235,002.72 = 51,461.66 : x
2. Step 2: Convert to fraction form
   156,641.78/235,002.72 = 51,461.66/x
3. Step 3: Cross multiply
   156,641.78x = 235,002.72 × 51,461.66
4. Step 4: Simplify right side
   156,641.78x = 12,093,630,075.72
5. Step 5: Solve for x
   x = 12,093,630,075.72/156,641.78
6. Step 6: Final answer
   x = 77,205.65