Finding the Fourth Proportional to 113,061.26, 156,026.97 and 64,667.60

Step by Step Solution

1. Step 1: Write the proportion equation
   113,061.26 : 156,026.97 = 64,667.60 : x
2. Step 2: Convert to fraction form
   113,061.26/156,026.97 = 64,667.60/x
3. Step 3: Cross multiply
   113,061.26x = 156,026.97 × 64,667.60
4. Step 4: Simplify right side
   113,061.26x = 10,089,889,685.17
5. Step 5: Solve for x
   x = 10,089,889,685.17/113,061.26
6. Step 6: Final answer
   x = 89,242.68