Finding the Fourth Proportional to 83,238,923.40, 124,808,618.70 and 42,928,139.40

Step by Step Solution

1. Step 1: Write the proportion equation
   83,238,923.40 : 124,808,618.70 = 42,928,139.40 : x
2. Step 2: Convert to fraction form
   83,238,923.40/124,808,618.70 = 42,928,139.40/x
3. Step 3: Cross multiply
   83,238,923.40x = 124,808,618.70 × 42,928,139.40
4. Step 4: Simplify right side
   83,238,923.40x = 5,357,801,781,875,047
5. Step 5: Solve for x
   x = 5,357,801,781,875,047/83,238,923.40
6. Step 6: Final answer
   x = 64,366,543.48