Finding the Fourth Proportional to 65,835,438, 90,831,909.24 and 42,648,339.12

Step by Step Solution

1. Step 1: Write the proportion equation
   65,835,438 : 90,831,909.24 = 42,648,339.12 : x
2. Step 2: Convert to fraction form
   65,835,438/90,831,909.24 = 42,648,339.12/x
3. Step 3: Cross multiply
   65,835,438x = 90,831,909.24 × 42,648,339.12
4. Step 4: Simplify right side
   65,835,438x = 3,873,830,068,184,581
5. Step 5: Solve for x
   x = 3,873,830,068,184,581/65,835,438
6. Step 6: Final answer
   x = 58,841,107.25