Finding the Fourth Proportional to 100,061.43, 138,156.98 and 61,873.34

Step by Step Solution

1. Step 1: Write the proportion equation
   100,061.43 : 138,156.98 = 61,873.34 : x
2. Step 2: Convert to fraction form
   100,061.43/138,156.98 = 61,873.34/x
3. Step 3: Cross multiply
   100,061.43x = 138,156.98 × 61,873.34
4. Step 4: Simplify right side
   100,061.43x = 8,548,232,796.76
5. Step 5: Solve for x
   x = 8,548,232,796.76/100,061.43
6. Step 6: Final answer
   x = 85,429.85