Finding the Fourth Proportional to 208,483.34, 287,707.50 and 112,990.01

Step by Step Solution

1. Step 1: Write the proportion equation
   208,483.34 : 287,707.50 = 112,990.01 : x
2. Step 2: Convert to fraction form
   208,483.34/287,707.50 = 112,990.01/x
3. Step 3: Cross multiply
   208,483.34x = 287,707.50 × 112,990.01
4. Step 4: Simplify right side
   208,483.34x = 32,508,071,863.54
5. Step 5: Solve for x
   x = 32,508,071,863.54/208,483.34
6. Step 6: Final answer
   x = 155,926.48