Finding the Fourth Proportional to 155,100.39, 232,666.76 and 42,780.62

Step by Step Solution

1. Step 1: Write the proportion equation
   155,100.39 : 232,666.76 = 42,780.62 : x
2. Step 2: Convert to fraction form
   155,100.39/232,666.76 = 42,780.62/x
3. Step 3: Cross multiply
   155,100.39x = 232,666.76 × 42,780.62
4. Step 4: Simplify right side
   155,100.39x = 9,953,628,934.81
5. Step 5: Solve for x
   x = 9,953,628,934.81/155,100.39
6. Step 6: Final answer
   x = 64,175.40