Finding the Fourth Proportional to 88,856.70, 133,066.35 and 42,054.90

Step by Step Solution

1. Step 1: Write the proportion equation
   88,856.70 : 133,066.35 = 42,054.90 : x
2. Step 2: Convert to fraction form
   88,856.70/133,066.35 = 42,054.90/x
3. Step 3: Cross multiply
   88,856.70x = 133,066.35 × 42,054.90
4. Step 4: Simplify right side
   88,856.70x = 5,596,092,042.62
5. Step 5: Solve for x
   x = 5,596,092,042.62/88,856.70
6. Step 6: Final answer
   x = 62,978.84