Finding the Fourth Proportional to 103,577.18, 142,947.47 and 63,314.51

Step by Step Solution

1. Step 1: Write the proportion equation
   103,577.18 : 142,947.47 = 63,314.51 : x
2. Step 2: Convert to fraction form
   103,577.18/142,947.47 = 63,314.51/x
3. Step 3: Cross multiply
   103,577.18x = 142,947.47 × 63,314.51
4. Step 4: Simplify right side
   103,577.18x = 9,050,648,819.71
5. Step 5: Solve for x
   x = 9,050,648,819.71/103,577.18
6. Step 6: Final answer
   x = 87,380.72