Finding the Fourth Proportional to 103,995.53, 143,513.30 and 56,248.76

Step by Step Solution

1. Step 1: Write the proportion equation
   103,995.53 : 143,513.30 = 56,248.76 : x
2. Step 2: Convert to fraction form
   103,995.53/143,513.30 = 56,248.76/x
3. Step 3: Cross multiply
   103,995.53x = 143,513.30 × 56,248.76
4. Step 4: Simplify right side
   103,995.53x = 8,072,445,667.91
5. Step 5: Solve for x
   x = 8,072,445,667.91/103,995.53
6. Step 6: Final answer
   x = 77,623.01