Finding the Fourth Proportional to 42,005,322.95, 63,017,238.51 and 12,859,382.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,005,322.95 : 63,017,238.51 = 12,859,382.40 : x
2. Step 2: Convert to fraction form
   42,005,322.95/63,017,238.51 = 12,859,382.40/x
3. Step 3: Cross multiply
   42,005,322.95x = 63,017,238.51 × 12,859,382.40
4. Step 4: Simplify right side
   42,005,322.95x = 810,362,767,792,096.25
5. Step 5: Solve for x
   x = 810,362,767,792,096.25/42,005,322.95
6. Step 6: Final answer
   x = 19,291,906.62