Finding the Fourth Proportional to 103,667.46, 155,312.56 and 72,010.64

Step by Step Solution

1. Step 1: Write the proportion equation
   103,667.46 : 155,312.56 = 72,010.64 : x
2. Step 2: Convert to fraction form
   103,667.46/155,312.56 = 72,010.64/x
3. Step 3: Cross multiply
   103,667.46x = 155,312.56 × 72,010.64
4. Step 4: Simplify right side
   103,667.46x = 11,184,156,845.64
5. Step 5: Solve for x
   x = 11,184,156,845.64/103,667.46
6. Step 6: Final answer
   x = 107,884.93