Finding the Fourth Proportional to 30,748,688.64, 42,439,677.84 and 25,587,018.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,748,688.64 : 42,439,677.84 = 25,587,018.72 : x
2. Step 2: Convert to fraction form
   30,748,688.64/42,439,677.84 = 25,587,018.72/x
3. Step 3: Cross multiply
   30,748,688.64x = 42,439,677.84 × 25,587,018.72
4. Step 4: Simplify right side
   30,748,688.64x = 1,085,904,831,362,849.25
5. Step 5: Solve for x
   x = 1,085,904,831,362,849.25/30,748,688.64
6. Step 6: Final answer
   x = 35,315,484.31