Finding the Fourth Proportional to 102,097.56, 140,894.76 and 56,774.58

Step by Step Solution

1. Step 1: Write the proportion equation
   102,097.56 : 140,894.76 = 56,774.58 : x
2. Step 2: Convert to fraction form
   102,097.56/140,894.76 = 56,774.58/x
3. Step 3: Cross multiply
   102,097.56x = 140,894.76 × 56,774.58
4. Step 4: Simplify right side
   102,097.56x = 7,999,240,823.20
5. Step 5: Solve for x
   x = 7,999,240,823.20/102,097.56
6. Step 6: Final answer
   x = 78,348.99