Finding the Fourth Proportional to 77,910.15, 107,516.05 and 42,100.17

Step by Step Solution

1. Step 1: Write the proportion equation
   77,910.15 : 107,516.05 = 42,100.17 : x
2. Step 2: Convert to fraction form
   77,910.15/107,516.05 = 42,100.17/x
3. Step 3: Cross multiply
   77,910.15x = 107,516.05 × 42,100.17
4. Step 4: Simplify right side
   77,910.15x = 4,526,443,982.73
5. Step 5: Solve for x
   x = 4,526,443,982.73/77,910.15
6. Step 6: Final answer
   x = 58,098.26