Finding the Fourth Proportional to 156,971.74, 235,141.98 and 72,613.48

Step by Step Solution

1. Step 1: Write the proportion equation
   156,971.74 : 235,141.98 = 72,613.48 : x
2. Step 2: Convert to fraction form
   156,971.74/235,141.98 = 72,613.48/x
3. Step 3: Cross multiply
   156,971.74x = 235,141.98 × 72,613.48
4. Step 4: Simplify right side
   156,971.74x = 17,074,477,461.89
5. Step 5: Solve for x
   x = 17,074,477,461.89/156,971.74
6. Step 6: Final answer
   x = 108,774.21