Finding the Fourth Proportional to 42,210,366.72, 63,305,985.60 and 21,439,750.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,210,366.72 : 63,305,985.60 = 21,439,750.56 : x
2. Step 2: Convert to fraction form
   42,210,366.72/63,305,985.60 = 21,439,750.56/x
3. Step 3: Cross multiply
   42,210,366.72x = 63,305,985.60 × 21,439,750.56
4. Step 4: Simplify right side
   42,210,366.72x = 1,357,264,540,218,952
5. Step 5: Solve for x
   x = 1,357,264,540,218,952/42,210,366.72
6. Step 6: Final answer
   x = 32,154,767.79