Finding the Fourth Proportional to 113,494.06, 156,483.04 and 70,978.78

Step by Step Solution

1. Step 1: Write the proportion equation
   113,494.06 : 156,483.04 = 70,978.78 : x
2. Step 2: Convert to fraction form
   113,494.06/156,483.04 = 70,978.78/x
3. Step 3: Cross multiply
   113,494.06x = 156,483.04 × 70,978.78
4. Step 4: Simplify right side
   113,494.06x = 11,106,975,421.13
5. Step 5: Solve for x
   x = 11,106,975,421.13/113,494.06
6. Step 6: Final answer
   x = 97,863.93