Finding the Fourth Proportional to 104,223.47, 143,828.89 and 56,476.91

Step by Step Solution

1. Step 1: Write the proportion equation
   104,223.47 : 143,828.89 = 56,476.91 : x
2. Step 2: Convert to fraction form
   104,223.47/143,828.89 = 56,476.91/x
3. Step 3: Cross multiply
   104,223.47x = 143,828.89 × 56,476.91
4. Step 4: Simplify right side
   104,223.47x = 8,123,011,494.31
5. Step 5: Solve for x
   x = 8,123,011,494.31/104,223.47
6. Step 6: Final answer
   x = 77,938.41