Finding the Fourth Proportional to 101,804.71, 140,485.74 and 56,482.21

Step by Step Solution

1. Step 1: Write the proportion equation
   101,804.71 : 140,485.74 = 56,482.21 : x
2. Step 2: Convert to fraction form
   101,804.71/140,485.74 = 56,482.21/x
3. Step 3: Cross multiply
   101,804.71x = 140,485.74 × 56,482.21
4. Step 4: Simplify right side
   101,804.71x = 7,934,945,068.69
5. Step 5: Solve for x
   x = 7,934,945,068.69/101,804.71
6. Step 6: Final answer
   x = 77,942.81