Finding the Fourth Proportional to 123,795.34, 170,838.29 and 72,810.22

Step by Step Solution

1. Step 1: Write the proportion equation
   123,795.34 : 170,838.29 = 72,810.22 : x
2. Step 2: Convert to fraction form
   123,795.34/170,838.29 = 72,810.22/x
3. Step 3: Cross multiply
   123,795.34x = 170,838.29 × 72,810.22
4. Step 4: Simplify right side
   123,795.34x = 12,438,772,688.18
5. Step 5: Solve for x
   x = 12,438,772,688.18/123,795.34
6. Step 6: Final answer
   x = 100,478.52