Finding the Fourth Proportional to 103,901.46, 143,317.53 and 72,058.74

Step by Step Solution

1. Step 1: Write the proportion equation
   103,901.46 : 143,317.53 = 72,058.74 : x
2. Step 2: Convert to fraction form
   103,901.46/143,317.53 = 72,058.74/x
3. Step 3: Cross multiply
   103,901.46x = 143,317.53 × 72,058.74
4. Step 4: Simplify right side
   103,901.46x = 10,327,280,631.71
5. Step 5: Solve for x
   x = 10,327,280,631.71/103,901.46
6. Step 6: Final answer
   x = 99,394.95