Finding the Fourth Proportional to 2,140,123.18, 3,210,297.66 and 542,700.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140,123.18 : 3,210,297.66 = 542,700.12 : x
2. Step 2: Convert to fraction form
   2,140,123.18/3,210,297.66 = 542,700.12/x
3. Step 3: Cross multiply
   2,140,123.18x = 3,210,297.66 × 542,700.12
4. Step 4: Simplify right side
   2,140,123.18x = 1,742,228,925,317.72
5. Step 5: Solve for x
   x = 1,742,228,925,317.72/2,140,123.18
6. Step 6: Final answer
   x = 814,078.81