Finding the Fourth Proportional to 157,100.52, 235,526.76 and 78,171.72

Step by Step Solution

1. Step 1: Write the proportion equation
   157,100.52 : 235,526.76 = 78,171.72 : x
2. Step 2: Convert to fraction form
   157,100.52/235,526.76 = 78,171.72/x
3. Step 3: Cross multiply
   157,100.52x = 235,526.76 × 78,171.72
4. Step 4: Simplify right side
   157,100.52x = 18,411,531,935.23
5. Step 5: Solve for x
   x = 18,411,531,935.23/157,100.52
6. Step 6: Final answer
   x = 117,195.87