Finding the Fourth Proportional to 139,359,457.86, 209,025,679.20 and 42,316,018.44

Step by Step Solution

1. Step 1: Write the proportion equation
   139,359,457.86 : 209,025,679.20 = 42,316,018.44 : x
2. Step 2: Convert to fraction form
   139,359,457.86/209,025,679.20 = 42,316,018.44/x
3. Step 3: Cross multiply
   139,359,457.86x = 209,025,679.20 × 42,316,018.44
4. Step 4: Simplify right side
   139,359,457.86x = 8,845,134,495,460,723
5. Step 5: Solve for x
   x = 8,845,134,495,460,723/139,359,457.86
6. Step 6: Final answer
   x = 63,469,926.13