Finding the Fourth Proportional to 104,573.61, 144,307.71 and 56,825.91

Step by Step Solution

1. Step 1: Write the proportion equation
   104,573.61 : 144,307.71 = 56,825.91 : x
2. Step 2: Convert to fraction form
   104,573.61/144,307.71 = 56,825.91/x
3. Step 3: Cross multiply
   104,573.61x = 144,307.71 × 56,825.91
4. Step 4: Simplify right side
   104,573.61x = 8,200,416,940.77
5. Step 5: Solve for x
   x = 8,200,416,940.77/104,573.61
6. Step 6: Final answer
   x = 78,417.65